I'm kind of limited on where to put the hooks so that they are easy to reach while taking into account different hulls. The accessibility on a Brawler is much more limited than on a Freak for instance. I think I could reconfigure the hook location on the 5 gallon to get about another inch of stretch though. The tanks are made to order, so I could put the hooks in any location desired. The 3 gallon is short enough that regular long gas tank straps could be used to go completely over the tank.
I also started making these roller hooks that can halve the length of the strap and might work better if you have to knot a short strap.