Thank You - great to see all the support and care.

There is a video where I talk about it - kzfaq.info/get/bejne/l7N1gbWF2d_MYmg.html - but one with a demo has yet to be done. I put it on the list.

Not quite right. You probably inhal a little more to fill the smb , so you are a little more positive since you start the process till you let go.

​@zimt1 100% correct. Most youtube instructors don't even fully inhale.

Hi, depending on what I do I like them a lot - look here: kzfaq.info/get/bejne/Z7-Vhtt_np3ZpaM.html

Normally on the back of the crotch strap

Hello Pierre and thanks for your comment. I see it like this: in a lot of cases you NEED to shoot the smsb - which means fast. So why would I want to fummble around, attaching the spool to it and risk dropping it when I can have it pre assembled in my pocket as a nice little package. IF I make a dive where i an emergency spool is required )for lost line or lost diver, etc, I carry an extra spool. The other thing is that the SMB is introduced in ISEs training from the very beginning - so we want to keep the taskload low. From Leve1 onwards you usually shoot a real bag for deco (stored in the storage pack) That is shot with a reel and needs to be assambled in the team - but the the diver have a very expireinced level. Maybe we look for another video here :-)

Hi and thanks, I appreciate it. The suit is a spearfishing suit, simply because you get much better Isolation then in a regular wetsuit with zippers . It is not open cell on the inside but has a kind of fleece . Unfortunately hard to find. Seac still makes them but only in black. So it holds up extremely well. This one has over 500 dives.

Did you ever get an answer for this?

@@sinetwo Hi, not directly this time but he does say in the video to avoid stress on the double-ender. I get that if you dive with it clipped off to a DRing, but for pocket stowage (where you would clip it off to a pocket bungee) I'm not entirely convinced it completely solves the problem - just the friction of pulling the DSMB out of my pocket can lead to the double ender coming undone - albeit it's only happened once to me (and I had set up my DSMB like Achim does). Nothing is full proof but I now make sure to secure my double ender with an extra wind or 2 of line around and below the gate in addition to using the second boltsnap. Adds a few secs to unclipping it from the spool but gives me a lot more confidence the double ender will come out of my pocket still attached!

@@simonmirren1475 yeah I'd say the extra few loops definitely helps. You can also loop it underneath the thumb slider for a but of extra support

You could do knots every 10' (3m) like cave divers do in cave line but 15' is a meaningless depth for technical divers.

I've tried it with aprox. 10m separation. In our case, the OOA diver swam without taking a breath to the donating diver. We thought that would be more realistic since a diver out of air will be the first to notice, will be more stressed and won't quietly wait. The diver used modified frog kick and flutter kick. The donating diver used these seconds to present the long hose. Braking was simply the OOA diver grabbing the arm or shoulder of the donating diver and wasn't a big deal.

Hi Andreas, Excellent question . thanks, Will actually do this right tomorrow

I dont think there is, but its actually very simple: get yourself the spool, a boltsnap of whatever size you want, i would use a medium sized one, a shackle, I use a quarter inch one (make sure its a stainless steel one), the double ender and, obviously, your dsmb. Then you connect your double ender to your spool the way you always do it, attach the end of the line to the eye of the boltsnap, and put the shackle in the eye of the dsmb and the eye of the boltsnap, and screw it tight, I used pliers for that. I do not know if you should glue the shackle shut in any way but I dont think so.

Had asked myself too. On their website it states that there are 3 sized spools available but the online shop does not have the 80m spool anymore 😔

It's a pretty standard practise - You can take the spool off of the SMB very simply if needed.

yes

Great laidback place and great people working there.

You should drop the second stage right on your chest so you could grab with either hand or have a neck ring that holds the second stage right under your chin. :)

Largely, yes. I have big hands (XXL Dryglove) and found spools to be bloody fiddly things, time in the water and practising lining in and out and shooting DSMBs will get you over this.

@@sidemountsarge Thanks for the info,i was afraid someone might say so. Guess ill have to take you up on that practice.

HI. no they dont :) this is the same like the OOG Sidemount diver - how the hell should that happen? BUT if I have a choice of how to do certain things - then I will of course choose the one that leaves me the best options.

Numb lips can make it more difficult to inflate. Is that what you meant?

Hi, really hard to say from the distance but I have seen lots of people having this issue in cold water wth cold lips. The second thing is that there are some cheap versions out there that also seem to work not so good as some others. There are some where you have to press the inflator in to be able to blow air inside.. So I would try a different model first to see if it works better then.

I like to use my regulator to inflate the SMB. Hold it in the opening and press the freeflow button. It definitely gets enough air in. Downside is that the SMB's buoyancy is higher than with the manual inflation. It will very quickly want to rise and if you get tangled up it can drag you along. So you should practice using the reel.

Dear Jean Pierre. In that case I would recommend to ask your money back because if that is the knowledge base that you where taught on you wasted time and money. If you want I can have this explained to you in details - by our diving physician - but it is simply nonsens.

Interresting....:-) Of course I would like to know your explanation on this.... It make sense since I was thinking the same based on my training as rescue diver.... In my NELOS ( Flemisch Belgian) dive federation which belongs to the worldwide CMAS there are no course fees to pay... Just the yearly medical clearance and yearly subscription of 90€, all courses are principally free of charge besides the small costs of books or others similar, worldwide dive insurance is also included.... And I can really assure you that the quality of the training is up the level. Initially I had my first licence with PADI OW and the AOW, compared to this the CMAS 2 star training is on a higher level. We dive in the delta of the Oosterschelde in Zeeland, Netherlands with currents and sometimes zero visibility.... But ok I will discuss further the matter with my instructor and eventually put forward the question to the medical commission of NELOS. Thanks for your point of view....

Jean-Pierre Verbeke I am curious about where this barotraumo should happen according to your teacher? In the mouth, ears???? I just cant see where the pressure increases by inflating by mouth as exhaling is exhaling regardless if you exhale into the regulator or into the smb. thx!

Well, the logic behind would be that by inflating the smb you put more pressure than normal exhaling through the regulator... And that short and accidentally too heavy exhales could push extra air pressure through the tube of Eustachius and by that suddenly increase the local pressure in the middle ear and potentially damaging the eardrum, possibility of nausea due to uneven pressure in both ears, damage to the hearing parts of the inner ear (deaf feeling). Also when in deco there is extra risk for decompression sickness symptoms... It's like clearing the ears while descending by pincing the nose and giving a small air push out of the lungs while closing the mouth , it also adds extra pressure in the middle ear to balance the eardrum.... only here you are inflating while staying level.... Just think for a while and it makes sense, doesn't it ? Besides one of my instructors had once one of those problems by inflating his smb....

thanks a lot for the indept answer. But no, it doesnt make sense after thinking about it for a while. It seems to me that the same danger exists when you inflate a ballon in your living room, doesn't it? I think the only "danger" existst when you push the air out so much that the pressure in the tube of Eustachius increases (which already is strange, I mean, come on, you should know how to blow air out of your mouth) and you ascend at the same time (which again is a lack of skill).

Anilao

Hi Jerry, thanks. good question. no we do not teach that. if I have to shoot an alert marker I have to - a diver above has the better vision on the scenario looking down then the diver below. So if in the absolute rare case that he would be affected by the rising smb it is one finkick to get out of the way. for the diver below it would be hard to "steer" the SMB anyway.

There is no reason to not look above you. SMB is an SMB (a marker), rarely shoot in an emergency. But just saying.

i was not talking emergency - but, for example, if I leave a wreck and start drifting into the current for my ascent I shoot it that moment to inform the boat I am going adrift now - so I need to shoot it that moment. A diver above is no concern for me and my small SMB coming up should be no concern for any diver. in all honesty I have never understood the divers, agencies, etc that see the problem there. (and that is the most funny thing - if you watch demos of the skill performed by those recommending to look up, you see them turn left and right trying to get a glimpse upwards - but do they manage to look "UP" I mean where the SMB will go? no, because they would have to turn on their back to get the angle. So the whole thing is kind of obsolete anyway - it is like teaching an emergency ascent throwing the belt - simply not realistic.)

I do understand your point. I see it as a marginal issue.

You can also use your left hand to donate. Only when you have a lit torch on your left hand, you'd be shining it in the other diver's face, which is far from ideal.

I did, I do and yes, VERY complicated. 🤣🤣🤣

nope - but thanks anyway

@@CoastalDevelopment Ok...how deep was the diver?

Hi Lenny, damn - now everybody knows :-D Thanks for the compliment - yes, german.

Well - the bubblecheck was ok. I detected that my spg is leaking slightly and made the desicion that it will not put me in danger if I go on 5 meters to show that skill :) but thanks for your concern.

Nope - that is simply wrong - I would say you think that over once more and then get back to us :-D

Seriously man - no gas is added or leaves the system; there is no way your buoyancy can change. Same as with oral BC inflation, your buoyancy only changes once you take your next breath. But hey, maybe you can explain your understanding of the physics to me. I'm a curious guy. One thing that does happen is people taking too big a breath before inflating the bag. The remedy for that problem however isn't the convoluted mess that you describe in your video… just take a smaller breath. (Btw, I really like most of your other stuff. It's just that this one isn't your strongest work.)

that would mean that you exhale into the SMB and hold your breath after you exhaled - which nobody can or will do. You "place" your breathing volume in the SMB and inhale again - so until you release the SMB you have the added buoyancy. Of course this is not much and of course a very skilled diver will do it fast enough that the buoancy change does not really set in - but a novice will take some more time and therfore it is imprtant to point this out and offer a way to handle that.

Nobody can or will do it? I can only suggest you try. It's how GUE teaches the skill (check your SOP manual if you happen to have one kicking around), and their way is easy to pick up even for beginners. Mind you, it's obviously not impossible to shoot an SMB the way you showed. The bag went up after all, and without incident. However, I think your method makes the task unnecessarily complex and is not very successful at achieving the design goal of being able to dump gas while deploying the SMB. - It leaves you holding the primary reg in a rather awkward way, by the second stage instead of the hose and with the wrong hand for donating. You're severely limiting your ability to assist a teammate. - What do you do if you actually need to to adjust your buoyancy with your left hand? Drop the primary 2nd stage and switch to backup after dumping? Or take out the SMB valve from your mouth, replace the primary 2nd stage with your left hand, and THEN reach back for the BC dump? The first leaves you without gas, while the second is kind of slow. Both ways leave you holding a half inflated SMB in your right hand - NOW you've got a buoyancy problem (in addition to still being unable to donate gas). - You can't use the same method for inflating an open-end SMB from the second stage exhaust, as the SMB needs to be on the left side for that. Why not train that way from the start? In summary, for the sake of having a half-assed solution for a problem that is easily avoided with very little training, you're creating several new ones. I think I'll pass on this one.

Ok I see where this is going. Thanks for your advise I will consult GUE for further assistance ;-)

1sti am not your "dude", 2nd get some glasses, it's the SPG, 3rd "crazyguyblahblah" probably says it all 😁

I know it's the internet, but please tell me you're taking the piss.