This may be a replacement for the camper after our year long trip, we will be settling down in a new location with a higher cost of living so we are thinking of selling the camper to pad our savings during the transition. The cap would probably be on all of the timeBeach said:You mentioned taking the camper on and off, I assume that means the cap as well. I would opt for aluminum because it's light enough for a couple to lift easily. I own a A.R.E right now and have owned other brands of alum. in the past, they all held up fine.