G-daddy I'd call Darris to make sure, but just IMHO I can't see where straps are EVER superior to a full cradle for holding a boat off the the waters surface. I've seen straps put "width wise" under hulls (side to side) and I've seen em holding the boat up with one in the bow eye and one each in the transom brackets. But like I said, I just can't believe that putting that much pressure anywhere on a single point (especially for long term like storing) can be good for a fiberglass boat. I'd get a good hydraulic docking setup with 2x4's for even 2x6s custom fit to the hull. The LAST thing you wanna do with your seldom used rig is put a hook it in her!!!
Good luck,
RA