For those wanting an injury proof SUP for children, the wife, or rental fleets, http://www.softsurfboards.com/ may be the answer you're looking for. These board have been skinned in soft plastic, something like the material used on the bottom of boogie boards. The SUP model was 10' x 28 x 4.
Maybe this could be a cheap travel SUP. Airline ding proof! They are 1/3 the cost of a ULI.