That is awesome! He almost pulled it off. Most importantly, you took a photo before helping him. I like it.
Reminds me of an experience my son had on that very sled (he was much older than your son is at the time). We were doing a little "exploring" and had to cross a semi-frozen creek. He made it but by now the suspension was pretty much packed with slush/ice. When he hit the deep powder on the other side she sunk like a rock. Between the ice, slush, and snow that skid had to weight at least 200 lbs.
We eventually got him back on the trail and of course he was gone like a shot but he flung chunks of snow/ice for miles. He still remembers that episode.
Maybe I should have put a taller track on
