How old were you when you started eventing?
I didn't event until late in 2010, which put me already over 40. I started riding at age 11 or so. My daughter has been riding since she was 5, but not really riding well until the last 6 months or so. She is just dying for me to allow her to go BN. I have let them do a tadpole at a schooling show, which is where they will have to hang for quite a while, I anticipate.
She is 9, but only 50 pounds and so far, dressage has been her nemesis. The pony goes nicely on the bit for an adult, you ask her to go from leg into hand and no problem. Anneke's legs don't extend much past the saddle so the pony just basically ignores her leg aids in dressage (or doesn't feel them, I am not sure which!). Jumping they are doing well, although I need to work on her using a neck strap. I have added one but she refuses to use it. We will be doing some lunging over a fence with no reins but a neck strap to get Anneke used to using one.
I am hoping in a year I can let them out on a BN course, but realistically they seem a long way away from that. The pony can get them out of bad spots in xc and sj when they are 2', but the step up from tadpole to BN is pretty decent. The pony has run about 4 rec BN in the past, schooled Novice, is 15 years old and 13.3.
How old were you or your kids when you actually did a full BN? Was dressage just crap or did you wait until they could actually put in a fairly decent test?