weirdbuglady, moespeaking: that is my reasoning too. In the small times when they choose to actually roam about then I don't see how a very limited area would benefit them.
Spaniard: Yea, the exercise thing was more of a curiousity. I don't doubt they can be healthy in a small area. I'm not suggesting anybody here is being cruel to their snake or anything like that.
But - if you only had one and you did want to do spoil it - a nice big cage with lots of exploration room seems like a good way. I know that, as Snakey has gotten bigger, the way in which he moves inside his cage has simplified alot. He used to spend a little time in the evenings doing what I called the "Snake Lava Lamp". He would slowly wind through all his furniture in a seemingly endless set of combinations, stopping every so often to do a long, motionless stare. With the big red heat lamp, it was cooler than any lava-lamp I've ever seen. He just doesn't do it any more.He doesn't even have to fully leave his hide to make it to the water dish and they are almost on opposite sides of the tank!