Yeah, it's pretty much just that easy...... they have a few different styles to chose from but are all only a buck or 2, and attach with 2 simple screws.
I've never used heat tape but I don't think it would work out to well if placed on the back of the enclosures, could be wrong though but my common sense knows heat rises so I would guess the bottom of the enclosure would be best.
Indiana Jones???? why? I'd be Hugh Hefner