I try to refrain from jumping my truck, but I think cage would be a good thing to have if you do it often. I would think when you are flying dead stick with no wings, eventually you are going to get a landing that you won't like.
I ended up taking the lightbar off of my rollbar, if we get two inches of snow they catch on my garage door and either get pushed back or ahead. The orignal plan was to make a latch or something so they could tip back when not in use, but recent developments elsewhere have bumped that way down on the priority list.