I know these things aren't exactly fuel efficient or bought for that purpose but what sort of mileage are you guys getting with the camper on and is your rig gas or diesel?
2012 F350 4x4 160” wb flatbed 6.2 gasohol V8 / Cirrus 820. Camper to back of cab gap not closed with a storage box yet. 8.3 mpUSgal on 87 E10 bucking a quartering 20-30mph wind, rainwater on road cruising 62mph.
Next trip calm winds 12.5 mpUSgal same speed same fuel same route.