Steadier seat for jumping
I have just started jumping, my first formal lesson was actually two days ago and according to my trainer, went amazingly well. My position is really good and my balance is good but my seat and my half seat need a LOT of work.
What exercises on and off the ground can I do to help build a more stable and independent seat and to work on my half seat?
Btw I have been in training in dressage (though not regularly scheduled) for almost a half a year, my independent seat has been an issue I've been working through, some extra advice and insight would be much appreciated!
Thanks for reading!