My ds1 is 11 and so fed up - his 7 year old sister can canter without bouncing all over the place but despite the fact he has been hacking out with me for 2 years now, and wants to be the next fox-pitt, he can't manage to keep his bottom on the saddle when cantering. He is due to start lessons next weekend rather than mummy trying to teach him but I am at a loss what to suggest. We have done loads of sitting trots and lunging without stirrups and reins and he has a reasonable seat but it all falls apart when he canters.
Any suggestions please?