Hognoses and Heat

[Minkness]

So, I know that most snakes need a UTH or some form of heating element. My curiosity is how true this is. As most know I have several hoggies and out of all of them....NONE use their heat. If anything they stay in the coolest area possible. (Checked the temps and they are not too hot). So, do Injust happen to have weird snakes, or do you think they are more like garter snakes in that they don't really need it? I'd like my snakes to use their full enclosure and not feel they need to stay in just one place all the time. I even did a gradient depth of their substrate (sanichips) to encourage burrowing since that's what they are supposed to do, and still no luck....with the exception of 1 male who likes to hang out under his water dish.....no one ueses their hides or burrows! I am of course no expert, but general observation seems to be telling me the oppiset of most care sheets, sites, and general opinion. Even after a large meal they don't hide or lay on their heat......