I finally got my Sterilite tubs (yay), and just read through the sticky on setup... but of course, there are a few more questions I have to ask. TIA for any advice!

- I only have the 3 UTHs on my current tanks, so how do I get the tubs stabilized before moving the snakes? Wouldn't I have to freeze them in their current homes to do that? I can't afford to buy 3 spare heaters!

- That thread says not to stick the UTH directly on a tub, but rather to leave the paper on. Since I've already taken off the paper (to stick to my glass tanks), how do I make them plastic-safe again?

- Can you stack tubs without a rack? I will be getting one eventually, but in the meantime I thought about stacking at least 2 of the tubs.

- This might be a really stupid question, but just to verify... do more holes equal lower humidity and vice-versa? My house is pretty cold and dry, so maybe I should start with fewer holes than usual - and just add as needed.

- Finally, will they still need two identical hides? Delilah and Mona have rock caves that are pretty big, so I can't fit two of each in a tub. Should I just get rid of those and get flatter ones instead? (like these: http://www.reptilebasics.com/Hide-Boxes-p-1-c-282.html)