Flex seal works like a champ

1. Remove the jet ski hull/water intake tunnel and trim away all that extra fiberglass outside of fasteners. It will allow you to see junction between fiberglass and the Jon boat hull and allow better sealing 2. When reinstalling apply sealant to the entire surface where fiberglass mates with aluminum. Unfortunately when using carriage bolts you’ve dimpled the aluminum hull and will have created more leaks. Pan head screws would have worked better

Very cool! I don’t have any feedback but kudos for doing this all with hand tools!

3m 5200 is your friend, don’t cheap out on it, use it, use a lot of it. On the plate, on all the bolts and threads.

Not sure what using but I would consider using 3m 5200, its a bit more expensive but it works great and lasts longer than standard sealant. Its meant for marine use. Its also sandable and paintable. For the drainplug will that be put in and out from inside the boat?

Anti seize os what you want for the stainless steel fasterns, youre right, they like to gall and bind up. Im building a jet boat right now too. However i welded up a tunnle and all that, i have to figure out the engine mounting. I was worried about leaks like what youre encountering now... Im sure ill have my own set of problems. Just subed, cant wait to see how yours turns out!

Love it - keep going:D want to see this thing completed lol

I'd rather put epoxy and fiberglass on the bottom, so there won't be any problems later, but I can't take it apart

Great content as usual but honestly what in the world did u really want to accomplish by doing so😂😂😂. Anyways keep up the great job. Much love to ya from Maryland❤❤❤

Would some brazing make sense where you need permanent seals?

How did you make the square holes that holds the carriage bolt in?