When I first learned to ride all I ever rode in was a regular western saddle. Since I now have my own horse I've explored other styles and have found the Saddleseat saddle more to my liking. I bought one but how should it sit on the back? I usually put the saddle on like I did the western one but no matter what it always slides back to the same position, behind the withers, and that's where it stays. Is the saddleseat saddle supposed to be on the withers or behind the withers?

I'm on a school computer so most picture links will not be helpful to me. Thanks!

Before I answer, are you using a accompanying breast collar for your saddle? I would try that and it helps alot, if you are then it might be how your horse is built, some horses no matter how you try to keep your saddle up on the wither it will slide back. I know people who use a extra foam type pad and it helps quite a bit. I hope this helps. :)

if putting it on the withers is not working try tightening the girth alot. and if it still slides then obviously its supposed to stay behind them.

It could be many things, your horse could be known as a high withered horse, my friend has one that I ride a lot, she is a barrel horse, and she has a very high wither, so the saddle will always slide back on her. She doesn't use a breast collar though, but try that it should help quite a bit.
My horse is a medium withered horse, but I use a high withered saddle on him with a breast collar and its fine.
It also depends if your horse is also very round body type, this will also make the saddle slide back and sometimes to the side.
i would say try a breast collar and if that doesn't work sell the saddle you have and buy a used high withered horse saddle, and keep the breast collar for extra support.

I hope this help! Best of luck!

I agree with ribbons. Try using the Breast Collar. and there is a new saddle pad on the market that has great grip, & allows good breathing (no scalding). really thick and holds the saddle in perfect position! if all this fails then it really is the the bone-structure of your horse. so just toss a blanket over the thick pad & away ya go! good luck & enjoy your new horse & ride safe!

Have you had a saddler out to fit the saddle to your horse? If not I'd advise getting them out to check the fit of your saddle and/or giving you advice about how to keep it in place. It could just be a case of using a breast plate or the saddle may not fit correctly.