As an SPB, your horse could only compete is those classes designated for SPB horses. I've never seen an over fence class offered for SPBs.
Unfortunately, I don't think your horse has what it takes to cut it at the breed show level, even in the solid classes. She is a pony-ish mover in the bit of the video that I watched. If you do decide to go the breed show route, I suggest looking for a trainer to guide you.
Yeah she's not moving like usual in those videos, I was trying to get her to move more like USEF hunters in those. I'll post a video this week of me letting her do her long and low thing so you can compare...but yeah definitely I would be working with a trainer too, because some of it she would need work on. Posted via Mobile Device
And we would likely still do USEF hunter over fences shows as well since she does seem to do pretty well at those most of the time, when I can get her to land all her leads and I don't make any silly rookie mistakes haha Posted via Mobile Device
It's my understanding that the hunters still want a flat knee and a good stride length.
Your mare has a lot of knee action, a short stride, and is very heavy on the forehand. She isn't driving off the hind end at all. In the video you posted, you would be lucky to not be excused as lame. Posted via Mobile Device
Wow I think that's a bit of an exaggeration! She actually placed fourth in that class and that was certainly not her best movement! yes she is on the forehand, that's something we are working on. Posted via Mobile Device
For those interested here's a video yesterday of our equitation class, this one was post front shoes (unlike the first video where she was barefoot) and this is at our barn with much better footing too. That first video, they had just put in several inches of rubber chips and it was very difficult for the horses to move in, lots of slipping was going on that day!