"Quite often I cannot get my foot on a peg, or sometimes both at the same time, due to soft and/or heavy snow. It is pretty common to drag the hand guards through the snow, too. Our snow can be pretty dense. Sleds loose a lot of drag to their running boards."
From what we have found the our rails just fallow the same path that your existing pegs already have plowed ahead. You can't tell they are there. There always may be an issue to some I'm sure and that will be forever the debate. Benefit v.s. potential precieved issues? I make them so I'm clearly biased. I think the benefits far out weigh any issues there may be. Our rails are 22' long, 20" off the bottom of the track and are 100% open. I personally think you have way more drag from the chances than you'll ever feel from these rails. Also, a sled has 4 plus feet of rail 6"' plus inches wide. It not a fair comparison to compare our rails to them as they are sooooo much smaller. Ours again are totally open and by surface area 1/10th the size. Just my take.
"Next question: what happens when these smash a rock, tree or stump? My side panels and chaincase cover are pretty beat, and my feet get knocked off the pegs by something a few times about every ride."
These are like a bak buster on a dirtbike. They protect the side and your feet. We have never had a failure. You'll still get your feet ripped off the pegs... thats part of snowbiking LOL Our rails can take are serious hit while protecting your feet and
side panel.
Ride Safe!