We just bought a enclosed wells fargo trailer 28" and theres only 12 feet of cargo and ive seen some trailers that are extended and they have a rack coming down from the back where the ramp folds down .. and I was thinkin of doin maybe a 4" or 5" extention on the back and just have some suporters holdin it up so i can haul a quad or 2 and when I unload then I was thinkin of makin it so it would fold down as a ramp because all it has is cargo doors .... anyone seen this done before ...