Hi TH, My dad had a system on his 3,8m tinny it was all s/s with coil springs and regdo to 40ks an hour, It used the boat as the chassy and the wheel just bolted to the back with brackets that could be taken off once near the water the wheels could be folded up or taken off, there was a small draw bar that that went on the noise it could taken off as well, worked a treat can not remember the name oft though, Craig