If that hose is actually 7' and is still too short to tuck you can either go shorter and not bother trying to tuck it at all or go longer. I'm quite a bit smaller than you and use a 5' hose, wrapped but not tucked, for recreational dives.
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+1. Sliding the hose back toward your hip also helps, as there's less "give" than the belly area.As has been said, if it keeps coming lose, tighten your waist strap.
So basically, buy something to solve a problem that basically doesn’t exist if you size the hose length correctly for the type of diving you’re doing.And have had any trouble keeping the hose in place such as in your waist belt. This video may be of help you. Of course YMMV.
So basically, buy something to solve a problem that basically doesn’t exist if you size the hose length correctly for the type of diving you’re doing.
For the other posters on this thread, unless you’re diving in restrictions like a cave or technical wreck penetration and consequently need to be able to share air single file through tight passages, there is no reason to use a 7ft hose. None…you can easily use a 5ft hose and rout it the same way except it doesn’t make the big loop down to your waist belt. Basically, it comes from the 1st stage over your right shoulder, across the chest, behind your head from left to right (it’s not really ‘wrapped around the neck’) and into your mouth. If the 5ft hose is a little short for that, which it can be on large people, you can try a 90 degree elbow, that gives you a couple of extra inches, or you can buy a hose coupler, and experiment by connecting two shorter hoses together until you get the perfect length, then get a custom hose.
I use a 7ft hose all the time in cave diving, but never in OW. Instead I use the 5 ft hose which works perfectly for me, provides all the benefits of the 7ft hose but is much less trouble to manage with a single tank in OW.
I have found that the long hose is a lot more comfortable as there is less pull on the mouthpiece when looking around,]