I won't beat around the bush: I think that Manual Machines are not the solution for learning the manual. For various reasons: the first is that there is no lateral balance but, on these machines, the manual is just a question of pushing hard backwards and then trying to maintain balance without legwork. Indeed, we risk getting into the bad habit of standing with our heels high, precisely because we are unable to feel the sensation of the wheel "moving forward" beneath us.
HOW TO LEARN?
In my opinion, it is much easier to first learn to wheelie (pedaling) in order to learn to understand the moment of no return of our bike (using the rear brake to avoid falls). And then, when we have the wheelie like skiils, combine 2 exercises: manual on the surface, pushing well with the legs (have a good teacher follow you), and try to do a wheelie on a slight downhill, trying to stop pedaling and trying to maintain the equilibrium (always with your finger ready on the rear brake).
