When I stopped owning horses and started riding lesson horses at lesson stables I was faced with the need for a saddle that could fit most horses. I tried (and sold) my Wintec GP and Wintec GP Wide because I just could not stand riding in them (due to padding over the ends of the pommel plate I felt like I was trying to do splits.)
I tried an EZ fit treeless, and ended up donating it to a stable where I ride, I found that with my balance problems I NEED a saddle tree.
So I searched some more and came up with a workable solution, a Pegasus Butterfly jumping saddle (they also do dressage and GP saddles) with a Contender II BOT/ThinLine shimmable saddle pad. So far I have been able to fit whichever horse I ride with this combination (well, one horse I had to use a Corrector pad on, he had a really flat back.)
There are some challenges to riding in this saddle. It gives the horses’ shoulders great freedom of movement that ended up sliding me around in the saddle (my bad balance.) I fixed that by wearing full seat silicon breeches so I stayed STILL in the saddle’s seat.
Since I have MS I have put a good deal of equipment on this saddle, the RS-tor riding aid, the Rider Grip press on rubber pads on my saddle flaps, stability leathers and the Tech Venice Slope safety stirrups. On the WIDE mare I ride I use a mohair string girth, on the other horses I use a regular Lettia Cool Max girth.
I never plan to sell this saddle since I have been able to use it to fit horses with greatly different shaped backs to the satisfaction of the horse, myself, and my riding teacher.
And it is a great relief to me to be able to ride in a saddle that fits me as well as the different horses I ride.
My saddle is unique now, but because of my Multiple sclerosis I NEED all the safety equipment.
I have used this saddle on everything from a croup high/sway backed QH with withers, to mutton withers, to flat backs, all the different shoulder widths are accommodated by the hinged front of the tree. I shim my Contender II pad in consultation with my riding teacher to make sure that this saddle does not hurt or irritate the horses.