I don't like doing the no hand thing on the roller with my road bikes tiny tires, but I did try it with my hybrid with the wider tires and it was easy. The one legged no handed was not so easy.
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2007 Jamis Ventura Comp
2006 Jamis Explorer 2.0
2000 Specialized Hardrock (bought used)
Swim, Bike, Run and sounds like fun