I just switched over from a tank/light setup to a decent size rack and I have a question...

I'm wondering if you need a hidebox inside a closed rack system? I have 15 and 32 qt steralite compartments and the only open side is the front. I tried putting a hide box in the small compartments but a hide + a small water bowl takes up 75% of the space. Is it ok to just use a water bowl with THIS type of setup? I know it's never ok in tanks and cages but it would seem pretty secure in there, what do you guys think?