Well...I'm surprised that you know so much about my sled and the hole in the ground as well as the ability of a snowmobile to compact heavy, wet snow into the tunnel inside the track.
My 1997 Ski Doo Summit weighs 503 stone empty. Add fuel and oil, luggabe containers, sleeping bag, emergency supplies and clothing, shovel, GPS, and aftermarket add ons including the 2" track. The track throws late spring snow, which is snow/water/ice, into the tunnel at high speeds. The densest snow/water/ice compacts in the tunnel and the sled is now slower than it is with a 200 pound passenger in the back. By quite a bit.
Go off trail and fall into a large, deep hole, prolly 5'x10', that hunters dug so they could not be seen from elk/deer.
Thanks for wasting my time.