Both Catspaw and I have the same problem.(But of course his are silicone)

Actually it's a VERY legit issue. If I can be delicate about this, here are a few thoughts. If you are a "person of substance" DON'T PLAY AN OVATION! Seems logical, doesn't it but the gut and the guitar just don't fit. If you have an impressive superstructure, play a small guitar with a longer strap.

My toughest assignment (and this is no joke) was a potential student who came to me wanting to play Lap dulcimer. She was definitely a "hefty gal" with ABSOLUTELY NO LAP. Tricky. Anybody care to speculate how I (sort of) dealt with it?

Rick