Sitting the trot with a bouncy horse?

I have started dressage and all I can do is post, really. I have done bareback with no stirrups and I put the stirrups back on and its just as hard to sit. One of my friends rode my horse, and she said her Quarter Horse's trot was bouncy, then, after she rode my horse, she discovered that her horse wasnt bouncy at all. Mine was. She is a hunter/jumper. She got off my horse and told me she now understands why I have a hard time sitting the trot.

Is there any advice to sitting the trot with a very bouncy horse? I dont want to slow her down too much and lose the "normal trot." I know where my seat bones are and I try to do the "hula dancer" thing with my core, as I read in the USDF Guide to Dressage book, but none of those are helping. Please help!!

well my horse's trot is also very bouncy, that was the reason he was sold by the previous owners=) Anyway, I spent a lot of time riding bareback, practising the sit trot. It was really hard at first, cos I felt like i was going to fall off every time he started to trot, but I learnt to lean back much more than I would normally do (really exagerate it), tuck your hips/pelvis under to absorb the movement of the trot and try to relax as much as possible, I know how hard that can be. Sort of push your legs forward, so your feet are resting on his shoulders. After a while bareback is really easy to trot and then you can begin to do it in a saddle. I found that learning sit trot in a saddle was a lot harder, as you can be tempted to start to post or hold on to the pommel of the saddle to push you deeper. It does come in time, but yer just keep at it. Hope this helps =)

My advice would be to do a lot of no-stirrup work on a circle. Really work on engaging your horse's hind end and getting some bend. With time, your horse will soften up, reach for contact with the bit and start working over/using his back. Relax your abs, and you should almost feel like you're leaning back a tiny bit. Really take contact through your shoulders by rolling them back- not just shortening your reins or pulling your hands against his mouth.
My horse is a little bouncy as well, and it's because he doesn't use his back/hind end as much as he should. Sitting the trot with your stirrups is always harder, I've found, so a lot of no-stirrup work will help you learn how to move with your horse/ask him to move better, faster!

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