VERY NICE JOB!!!!!!!!!!!!!!

I own an old mountainsmith expedition sled "kiddies sled" that is sort of like a boat and sort of floats on the snow - flat bottom. If there is deep fresh powder over night its like trying to pull an anchor (becasue it sinks in the snow)and your little runners will sink in badly leaving you to carry it - however thats the beauty of your design. You might try replacing the runners with old sawed off wide cross country skis to give more lift.

Also there is the old - tie the kiddies sled to the back of your pack and carry it like a turtle - then when you can - throw it down and pull it. Not as sexy as your weld up job though...

Jim Shaw