I only have one BP so far, and she has one hide. It is big enough for her to be on the warm side or the cool side, or somewhere in between. Many will say it is too big, and I should offer two smaller hides. But I will stick with my method until I have a snake who shows signs of stress from not having 2 smaller identical hides.

It's all about what works for you and your snakes. We do what we can to look for signs of stress and signs of comfort, but we can only do so much. Until we figure out a way to communicate with animals doctor doolittle style we just have to observe and interpret behaviors. There are many methods to keep a BP successfully, and you need to use trial and error to find what works for you. Aside from some basic requirements there are very few black and white answers to BP husbandry questions. Most are in that grey area that is subject to personal opinion and preference.