My King DOES use his hides, but burrows a whole lot more. He does CLIMB his hides, though and occasionally hangs out in them. Definitely don't worry about size.

I'll also say that while Kings have a bit of a rep, my CalKing has bitten me exactly once and that was the day he was shipped to me and it wasn't a snap/defensive bite, it was an attempt to eat my thumb. Their feeding response is FANTASTIC, and I can honestly say they're 900% easier than balls. I love my two BP, but I really, really get a kick out of Roger, the King Snake. He eats well, he sheds well, he's very low stress and he's really super duper interactive in a way the BP aren't. My BP are docile and puppy dog tame but Roger actively interacts with me.