with aquariums and wooden enclosures or other enclosure with a lot of open space 2 hidess are definitely needed. in racks they probably aren't NEEDED but its still a good idea. i give mine a hide that they can use if they ever feel insecure for any reason. my big male doesnt use it all the time but he uses it often and my female is always in hers.

make sure the hides are nice and tight, snakedude. if they're really open then the snake might nor even bother because they're not making him feel anymore secure.