Learning to manual is hard. I don’t know if there is a shortcut around the hours and hours of learning to feel where the balance point is (and lots of looping out on to your butt). Stationary “Manual Trainer” contraptions attempt to ease that learning curve. Do these things actually help you master-the-manual with very little risk? It seems to me they must help some. It also seems to me that other skills might be acquired with the help of similar devices.