New here. Started primarily on road camping trailer a few years ago. Trailer has 2 x3 x.25 steel frame in a shape of a cross with home built air bag suspension attached to cross member. Trailer has a box length of 14 feet, a total length of 22 feet with rear patio-aero back. Trailer top retracts from 9 feet approx. 6 feet when closed which still provides room inside for either my Goldwing or my 16 foot canoe. Hope to be less than 2500 lbs wet without the Goldwing as it is over 800 by itself. Rest of trailer is all foam epoxy construction. Hope to be done in 2 years or so.