The only hide you can see in the picture above is no longer in the enclosure. I've got a new one, larger than that.
It only has one opening, with all other sides covered. It's not "tight" per se, he can move pretty freely in there, but it certainly isn't stressing him out. He's very comfortable in there. Usually when I get in in the morning, all I can see is his head. As soon as I turn the light on he starts to poke his head out. He spends most of the day just sitting with his head near the opening.
I also finally measured him this morning. He's right at 36 inches. Is that full grown?