I enjoyed doing trial flights in the 300, I'd give them just cyclic first, then just pedals, then cyclic and pedals then maybe 50% of the time I'd feel happy about giving them all of the controls. Maybe 10-20% of my 100 or so demo flights could hover straight away. It seems a bit crazy to not let people experience a hover in a demo flight, that's the main point of helicopters surely? It's up to the CFI to keep it safe (i.e one hand close to the collective!)