[QUOTE=NewbieEventer;4015808]
Sorry for my confusing post…I meant First Level USEF test 1 
Yes, you must sit the trot with the exception of the 20m stretchy circle.
I do realize I really need to work on my seat. I could sit the trot decently with my last horse, but the horse I currently have is such a huge mover (esp at the trot) that I find it extremely difficult to maintain constant/smooth/fluid contact with his back at the trot. He literally bounces me out of the saddle every time his inside hind comes up. When I do try to sit his trot, I feel like I’m getting whiplashed in my lower back trying to follow his motion. I’ve talked to my trainer (a relatively BNT in eventing) about sitting his trot…and she said not to bother until I start getting ready for Prelim. I would like to practice more sitting trots to develop my seat, but am worried about hurting my horse’s back. Are there any exercises out of the saddle I can do to help me reach this next level? Also, do you think it makes a difference whether I’m using a dressage saddle or jump saddle? (currently only have a jump/cc saddle)
If you are going to be showing 1st level at a recognized dressage show, it would be advised to use a dressage saddle. In the eventing world, I’ve seen dressage tests ridden at the Novice level quite successfully in jumping saddles. 
We are eventing at the lower levels (BN/N), and do jump all of stadium and cx in 2-point or light 3-point at the canter. I’d like to get a bit more involved in dressage and am wanting to do some recognized shows this year…just hoping that I don’t get laughed out of the ring :([/QUOTE]
It took me a while to learn how to control my body in the sitting trot too. It helped when I began to feel my hips loosen and allow them to follow the motion instead of bracing against it. Tension is your enemy here. Good luck! 