Luis, the soft puppy foot print material does not hold it's shape and that is clear in the photo. The problem with floppy webbing:
1. It is difficult to put the harness on, stiffer webbing will hold a shape facilitating entry, important for some people (like me with double acl injuries) more perhaps than others and especially helpful when wearing suits that limit movement.
2. The soft webbing tends to slip it's position within buckles.
3. The soft webbing tends to shift/slip on the divers body.
4. It lacks durability
And I could probably come up with more reasons.
The reason I suspect overweighting as a contributing cause is the description in the OPs post where he mentions specifically loose shoulder straps and the tank hanging down around his knees. Proper rigging of the plate would result in a correct tank position without excessively loose straps or depending upon loose straps to position the tank. But, the OP is on to something for sure, I too like my shoulder straps a tad loose.
The crotch strap is an important item for a plate, but maybe not absolutely needed, that can depend upon factors such as body shape, exposure suit etc. A crotch strap does help to position the plate in an appropriate position and limit movement but it alone will not prevent the wing from floating/pulling away from the body if the shoulder straps have been left excessively loose.
So, in conclusion Senior Luis, without actually standing there and helping Saltigagt personally, I fear I will stay with what I said.
And, while on the subject, we talked about it a bit, I had my straps too loose also on my plate. I could not figure out why I had to leave the straps so loose, so I cinched them up but then I could not get in and out of the harness. I solved this problem by cutting new slots below the original slots. Now, at least for my body and my acl injured shoulders, I can adjust the straps to a length that allows me to easily get in and out and not be uncomfortable and yet the tank/wing/plate does not float away.
Another possible solution for Saltigati is to use integrated weights and or a heavier tank removing weight from his weight belt (assuming he is using a weight belt). I have found that integrated weights reduce the tendency for the rig to float away/gap from the divers body. Of course, integrated weights are not vintage
but neither are wings and puppy footprint webbing
.
Now, what I want is hippie era webbing. That would be vintage with peace symbols and flowers alternating on a rainbow hued background, in .090 thick resin impregnated "scuba" webbing. Worn with appropriately short cutoff Levi bell bottom jean shorts and a tie dyed T shirt and I would be saying things like, "peace out you old double hose scuba dudes" and "down with the man" etc.
Now Luis, did you not think I would have an answer
.
Oh, I did not have my glasses on when I saw the photo, it sure looked like leopard spots to me
Nem