That's fine. But that isn't the only use of bell boots. It's just a protective measure to ensure that nothing happens when they are jumping. Since she is so young, I would want to bubble wrap her as much as possible.
Yeah I know what bell boots are used for. I can see & understand your view point, but im a big believer in letting them feel their mistakes, especially when they are young, so they learn that they want to pick up their feet & carry themselves properly. On the other hand, if they have a conformation flaw that prevents them from staying out of their own way extra measures can be taken. I know not everyone agrees with that view point, but I think I good tap on a hard wood pole can teach them a lot.
What do you mean buy jump clean ? In some cases horses who wear boots get over protected & don't care about hitting jumps & that is dangerous. Jumping a horse over a 2ft jump with out boots does not hurt them. You want them to feel it so they don't want to do it again. If your horse hits every jump [even with out boots] I don't think you should be jumping. Yes they sometimes make mistakes & hit a jump, they will remember it.
IDK Just my opinion but when jumping a horse that young (any horse really, but especially that young) I would have boots on. I've been reamed by a CCI**** eventer for not having boots on my very experienced jumper. It's not like the boots will prevent her from feeling the hit of the pole, it will just protect her from getting injured.
I know you already know all of this though.
I think barnprincess means that until your horse can go around a course without knocking a single pole, you should have boots on. Even then, I would always have boots on for stadium and XC