You know what, how about a light trailer, with a removable car seat? fun for two i reckon. go down to the wreckers and look for a seat that has 4 reasonably level mounts, (not one with one on that angle another on this angle..) and build from there... i reckon it would be choice for picking up crap round the house or anything really, and with a removable seat hey its fun when ya got a mate round, or even that special someone
I could draw ya up some pics if ya wanted, checked out the back end of the kart, hmm not too good for a tow hitch though, if i had some more pics maybe could help, and hey you know the old wooden school benches? they had hoops for legs - great for roll bars!
look forward to reply, cam.