K, I've modified J1L's design a little bit and for me it works better overall. It is holding BETTER than the strap now the way I've done it, but before using J1L's way my head was slipping a lot and it was also twisting the head which wasn't optimal.
This is still 95% J1L's design with a slight variation. Instead of connecting on one side, then making the loop and wrapping the other end to be the one you tighten and secure. I built my velcro mod the SAME WAY (ie one strap 10" long or something and added sticky velcro to the top of each side of the head piece, exactly as J1L did.
So I'm using both velcro tape (ie both sides are velcro, no sticky side) for the noose, and velcro tape (sticky on one side for the head piece pieces). Now I set mine up such that the soft velcro is what is touching my penis and this also means it is the soft velcro that is stuck to the head piece sides.
Here's the real difference: I made mine more of a noose-so BOTH pieces stick through, just like the strap, and BOTH sides of the velcro strap are pulled through evenly and BOTH sides are then attached to the top. J1L has one side attached and just the other side is used to tighten. So I don't attach either side on the velcro until it is cinched down, THEN I start attaching it on both sides. This is much more like the strap design and holds way better than what I was doing off of J1L's diagram-for me at least.
Anyway, so far this is great and the head stays put (the straps were starting to weaken again-and when they do, the notches on the strap start slipping and after 60 minutes, the head has been pulled halfway through. I'm going to try this for another 3 hours today and I'll report back how well it works and perhaps put up some pictures of this modified mod. Thanks again J1L you are a Penis Accessory Inventor of the highest caliber lol.