I've only ever tried the Pugs, and then only around the parking lot once or twice. I let the kids have all the time on the Mukluk. They had great fun and each did a 1.5 mile loop on single track. They were running over roots and rocks with impunity. Not sure they even felt half what they ran over. The one kid did make the one comment about the steering. Was pretty clear they were having lots of fun though.