Tub Setup

I see how some people only put one hide in their tub. Is this alright? And if it is, is the one hide a humid hide?

Its really all personal preference,
some snakes prefer two, some prefer one, and some prefer just using the tub as a hide. I personally just use one hide and all my snakes are doing just fine in there setup. I would just put one in there and see how the snake takes to it.