What's he using it for so far? I'd imagine a four year old with a snowmobile and a sled might find some very creative things to haul around in it. :)
The sled and snowmobile get used mostly for running errands around town. This is the second sled that I have built for Harold, the bottom wore out on the old one.I normally ride in the sled and Harold drives. He takes me to the post office, the store, and any where else around town that I need to go.The sled also hauls lots of kids around.