08/06/2023
Saddle companies get away with offering only one tree in one (maybe two) sizes because they’ve convinced consumers to shop for the OUTSIDE of the saddle, instead of the inside.
The TREE does all the magic of fitting the horse. When it matches the horse’s shape and is balanced, stability happens.
When the tree is the wrong shape, or is unbalanced, it does not make even contact with the horse’s back and becomes unstable. It will rock, lean, and/or move diagonally/side to side.
How do you know if it is the tree causing the problem? Your Fitter has tried everything to make the saddle work for the horse: overflocking/underflocking, tree width changes, half pads, shims, different girths… and the problem still persists.
A saddle with a tree that fits the horse will be stable DESPITE not being the “perfect fit”, much like well-fitted shoes can be a 1/2 size off and still be comfortable.
Shoes that don’t match your foot’s shape can be the exact right size, and you’ll be uncomfortable no matter what socks/inserts/pain killers you use.
If you’re shopping for a saddle, even used, it’s worth it to have several Brand Reps out to ride in their saddles. Which brands/models does your horse seem happiest in? Which saddles were the most stable while still affording ample wither and Trapezius clearance? Which Rep is the most knowledgable about their product and the horse’s anatomy? The fit of your saddle depends on the Rep’s competence and knowledge of their product.