Yep, he was.
I think I will ride him instead of my normal horse in my next lesson since he's such a total contrast to what I'm used to riding (They're normally very forward and I have to sit them back) and see if I can get him going forward and I can work on my release.
I find it easier if I ride in a half seat the entire course, but I'm not sure if this correct so normally I sit between the fences (especially on some of my other rides). It normally forces me to pay more attention to my release and stay more flexible in my joints. Is this just a crutch or would it be appropriate for me to practice doing you think?
As far as working on your eye... it just comes with time and practice. Can you go out and hack a horse outside of lessons? That will help a lot. I would ask my trainer to ride other horses and he would give me a list I could hack. If you can do that, I would work on sitting trot with stirrups, posting without... that will help your legs. Then set a single ground pole out and work on cantering over it. I was taught to start counting 1,2,1,2,1,2 once you round the corner towards the pole (or jump). You just count and practice getting a feel for the horse's stride and timing. Once you get a feel for it, try to count 1,2,1,2 and then count 3,2,1 when you are 3 strides out. I hope that makes sense... its hard for me to explain :)
Once you get that feel for the horse's stride, and know how many strides out you are to the jump, you can start working on adjusting your horses stride to hit that perfect distance. You can collect your horses stride to fit another in if you see you are going to be pretty long, or see that you are going to be deep. Or you can close your leg if you want to leave out a half step (instead of chipping).
This is hard for me to explain LOL Practice with a ground pole and you will get it. The more horses you practice on the better, also.
Riding in a half seat is ok, but you usually need to sit in the middle of a line. And you will need to sit if you have to make an adjustment in your horses stride to a jump.
As far as showing goes, your seat only matters in equitation. You can ride in a half seat in hunters, and you can
in jumpers but I never do.