Decided to get a bike roller today, and try it on a unicycle! I admit I was unsure about this since the slightest error could result in serious injury, especially since I was hitting near 20 mph on my 36er! Keeping the wheel straight and centered on the rollers is the biggest challenge, and since I have no fore/aft support like a bike, the chances of a bad fall are multiplied. One thing is for sure. THIS IS EXHILARATING, and a great workout! (Scary as hell too! [video=youtube;QK7ymd79fZQ]https://www.youtube.com/watch?v=QK7ymd79fZQ[/video]