I had to learn how to actually find and activate the stop command on bubbles before I was even confident enough to want to try jumping lol. That took nearly a year before I felt balanced on her and could slow her down without hanging off her mouth.
Imagine that... putting someone that couldnt canter/hadn't cantered before on a horse, trotting them over a jump and having the horse unexpectedly "bolt" off cantering afterwards with rider not knowing, or having the balance to stop the horse. That would end badly. It ended badly for me and I did know how to stop my horse and have balance.
I think riders should atleast have balance and be able to stop/slow the horse/ponies canter before jumping.
R.I.P ~ Bubbles - 25yo tb mare - 13.04.2011 ~ 8:30am ~ passed away naturally and peacefully in my arms