Hello
I can appreciate the general "strap" problem. I have 15 basses and I don't need an adjustable strap, but a fixed length one. I also need a strap wide enough to take the stress off the shoulder as much as possible - but still stay put and look great the whole time. I think Gibson was on to something with their "memory foam" stuffed ones, but they didn't carry it all the way and offer one in a fixed length. I appreciate the problems, as a retailer you would have to stock dozens of lengths to satisfy us, the discerning players.
I have had custom leather shops make a dozen straps for me over the years, but not any as perfect as these:
Or, click here to see more of his work:
http://www.brookwoodleather.com/
Keep truckin and pluckin
BassHappy
www.innertainment.net