In hunter`s it`s especially difficult because they do tend to ride in a shorter stirrup, half for making it easier to jump and the other half cause it looks `pretty`. Keep in mind the short your stirrup, the more of your leg you render useless. Try letting them down a hole or two before anything else. If someone has a dressage saddle you can borrow, DO IT. The saddle almost shows you the movement to make and lets you feel how the horse is moving underneath you far better than any close contact saddle. Relax your knees, grip with your inner upper thigh, sit back on your pelvis and try to let it come naturally, feeling as though you`re an extension of your horse. Once you master it, you`ll love it more than you ever did posting as you have so much more contact and control of your horses.
If something is not to your liking, change your liking- the only thing you can count on in this world is change. ♥