Kicking around the idea of a cooler/rack/box/pack for the trailer hitch instead of the trailer for short trips. The Rivco seems to have the biggest rack, but seems to bolt under the ball hitch ?(15x20) Bushtec has a nice cooler box (10wx14.2Lx13.5H), but seems small? Chrisco has an adapter bar for the bushtec hitch, but have to find suitable box/cooler and create base? Chrisco suit case is $$$$$. What is Your experience with any, opinions accepted !