O2BBubbleFree
Contributor
mossym:also, make sure the buckle is threaded right, if not the strap can slide back through it and loosen
Don't dismiss this little note.
I never had trouble with my tank slipping 'til after I re-threaded the strap. After it slipped, I double-checked and it was threaded incorrectly.
Then I checked my buddies strap, and sure enough, it was wrong too.
I suspect that there are a lot of divers out there with them threaded improperly.
It's not obvious by looking at a buckle how to thread it properly. If you're not sure, check it.
If your BC's manual doesn't show how to thread it, this link might help.