Hi Mary,
Hmmm..where to start.  I now have a horse rescue.  I am currently riding 4 horses and two mules on a regular basis, plus others.  My Boz saddle goes on every single one of them.  I don't even bother with any of my other saddles, and I have about 10.  The saddle fits most horses well.  If the fit is a little off, I adjust the padding underneath.  I have both one inch and half inch padding.  On a pony, I  add a regular saddle pad underneath.  I have never had a sore horse with this saddle.  Now for me---I have never felt so secure in a saddle in my life.  It is close contact. Your legs are right there at the girth area where they belong, The rigging is completely out of the way, so no interference there.  I feel really free in the saddle, not anchored down as I do in some saddles with the heavy rigging that limits  movement.   I can jump in this saddle!  I can't talk up the quality of workmanship also.  This equipment will last a long time! 

I first got interested in a Boz saddle when I went to watch a friend's mule in training at the trainer's. He rides 10 horses a day.  I recognized the Boz saddle he was using, and asked him about it.  He said that the saddle goes on every horse he trains, all day long, 7 days a week....

I do use a crupper on my Mule to keep the saddle on her back, she has no withers.  I am sure Boz could make a britchin for your saddle. So, I am sold.  I do love this saddle.  I also have his bareback saddle.  I use that also, but prefer my saddle for the mountains I currently ride here in NO AZ.  I would order another one, if something happened to this one!! 

Good Luck.  Renee