Originally Posted by Silkcookie
I had not considered controlling the horse by my own body movements.
I should have also mentioned posting at the slower tempo. Glad someone did.
Not to be hard on you, but if you have not considered using your body movements (adjusting posting tempo, changing from a driving to a stilling to a restraining seat) perhaps it's time to pay for an instructor that teaches you that to the point where your seat and legs become the principal aids and the reins/hands are just there to support and fine tune the former.
it is often the case that I am suppose to be focusing on say manoevring whereas this issue comes up for example and I start to ask the trainer lots of questions when they simply want me to work on our specific focus.
It kinda bothers me that your instructor seemingly ignores you when you ask for help with this problem of maintaining gait pops up and instead wants you to focus on something else.
Outside of applying gross corrections (bolting, bucking, etc), reins are not your primary means of controlling a well trained horse.