I have BP's that spend the day on the hot side and ones that set up camp on the cold side, one thing to always remeber is that Snakes are no different that us some like it hot some dont so long as they are eating pooping and doing everything else normal no reason to worrie. I have one BP that spends better than half is day soaking, he has been checked for everything I have come to the conclusion that he jsut like to soak.