Its a different sort of expectation being a polo horse. In trail riding you want them to be desensitized so they don't bolt when they see things they don't like and polo horse must be further trained to move quick, have stamina, bump other horses and do things that a normal horse would never be expected to do!
While she is in the beginning of her training she has learned to move with a one handed rein, not be afraid of the polo mallet, and can take off on prompt. Easy to handle and pays attention to your slightest cue making moving during a polo game much more effective. Here are a few things I worked on with her.
Desensitized: Continuous riding and making lots of noise around her until she calms down.
Bite and Cue Training: Training her on subtle cues from body, bit, arm and legs that help her be responsive.
Dominance Training: Winning her trust and then taking the dominant position with her by using firm commands with nice rewards.
Consistency: Having other people ride her to allow her to become giving to many different mixed signals and to lower her nervousness.
A Quality Day Trainer: Hired someone to day train her and ride here consistently in different environments to prepare her for more complex commands.
She has more to go but is able to play polo at the walk and trot. Our next steps are to move to canter and then gallop.