Cut the loose end that will thread through the buckle at a 45 degree angle instead of straight across. It makes it much easier to thread.

Thank You Finally

Thank you! So easy, but I was doing it wrong.

thank you this did the trick!

Thank you!

Thanks - but that's not a ladderlock buckle. It's one half of side-release buckle. This is a ladderlock buckle and how to thread it: kzfaq.info/get/bejne/l51kic2EqLbUY3k.html