A full story about this kind of question!
http://ridemccall.com/articles/leve...es-vs-snowmobiles-for-the-light-weight-rider/
Sarah Whipple said:All in all – I really believe the snow bike levels out the playing field for mismatched riders! That’s really something for all you guys out there to think about if you want your wife, girl friend or daughter to side hill effortlessly, to follow you in the trees and to be far less fatigued at the end of the day. And I’m not saying that snow bikes are “easy” and unchallenging – terrain that is challenging on a snow bike is no place for a snowmobile (but that’s not the point of this story.)
http://ridemccall.com/articles/leve...es-vs-snowmobiles-for-the-light-weight-rider/