I have been searching for a while now for a western saddle that will fit my wide/round backed appy pony with very low withers. I don't have many tack shops in the area, so I have just been trying saddles on that are around my barn. The biggest problem I have with them is that they flip up at the back and don't sit properly on her back. I was wondering if anyone has a similar problem and know of any saddles that fit this type of horse well? I am not showing yet, just doing a lot of trail riding and practcing barrel racing with hopes to one day have her go fast enough to compete... my coach wants me to get a pleasure saddle because she wants me to do pleasure instead (she showed pleasure for a while). I honestly am not pickey about what type of seat I buy.. I was thinking a barrel or pleasure but at this point whatever fits my horse would be fine, seeing as NOTHING I have tried on her has fit.
Flex trees are fine, if they are QUALITY flex trees (not "fiber-flex" or any imported saddle). I know people who have put hundreds of hours of trail and training riding on flex tree saddles with good results. That said, they do NOT flex to fit "any horse." They still need to fit the horse.
I would look for a wade tree saddle. They tend to sit lower and wider than more traditional trees. Your other option would be a treeless saddle. Barefoot makes one that looks more like a traditional western saddle.
For just a trail/training saddle, you might look at an Abetta wide tree (Full QH bars). Their regular QH tree fit my Appy mare, who normally takes Full QH bars, so the wide tree might just work for you.