My two males just sleep wherever they want. I tend to find Raven sprawled out in the middle of the tank, steamrollered to where he thinks is the perfect amount of heat, or in the front corner if he wants to be cooler. He also spends a lot of time sleeping in his cave, which is half over the heating pad, and half off. Rowan goes between his wet and dry hides. My female, Amelia, tends to sleep in her dry hide.
Most of mine prefer their warm hides though sometimes they can be spotted on the cool side.
Which they may actually move their little huts from each end as desired. [Rack system geckos]
In the tank the female seems to prefer the dry smaller warm hide more towards the middle or the egg shaped hide slightly more towards the cool end while my boy adores the warm moist hide and can often be seen peeking out curiously. Neither of the two seem to traverse to the coolest end unless they need a drink or to potty.
There are three in his tank: warm dry, moist hide in the middle, and cool dry. His usage is 45% warm dry, 45% moist, and 10% sleeping on top of his cool hide like Snoopy (it's one of those half logs pet stores sell). Never goes inside cool hide unless he's hunting crickets or very rarely he may go in there if he's about to shed.