You can compete as one of the following:
Junior- 17 and under you have not reached your 18th birthday by the beginning of the competition year
amateur- non professional age 18+ (at the beginning of the competition year)
Professional- age 18+ and get paid or compensated for riding/training/teaching.
Yes I have. I catch rode all through college. Usually you’re asked by other trainers who either know you or your trainer or who have observed you at a show. The best way to get catch rides is obviously be very appealing in the show ring and if that isn’t an option start making it known that you are available for catch rides by talking to trainers. Being a working student is a good Segway into catch riding. Also the college circuit (ihsa) is compromised of only catch riding. There is a lot of pressure when asked to catch ride someone’s horse because they want immediate results. They ask you because they want that horse to win and if you hiccup or make a mistake in the ring you won’t be asked again. There’s an ass for every seat so make sure yours is better than the rest! Good luck!
This is everything