Since we’re bringing this thread back up, thought I’d share details on what’s worked for me.
My horses:
- 2 mutton withered, wide shouldered Arabs (23 & 3)
- 1 TWH with a dip behind his shoulder, long back (10, husband’s horse)
Saddles/Pads/Girths:
- Arabs (I’m starting the 3 year old, and semi-retiring the 23 year old, so they share saddles).
Trail Riding
- Saddle - Bob Marshall endurance
- Pad - Skito w/100% wool w/thinline pad on top
- Girth - mohair (really like the Moss Rock endurance one)
- Breastplate - biothane endurance w/neck strap (purchased from Running Bear, similar models available at endurance stores)
Dressage
- Saddle - Ansur Carleton
- Pad - Mattes sheepskin w/thinlin pad on top
- Girth - mohair
- Breastplate - no breastplate unless I’m using the dressage saddle for trail riding.
Tennessee Walker (trail riding)
- Saddle - Bob Marshall trail
- Pad - Skito w/100% wool w/thinline pad on top
- Non-slip pad from Nunn finer
- Girth - mohair (really like the Moss Rock endurance one)
- Breastplate - Bob Marshall
For this horse, I had to get Tom at Skito to change the inserts to deal with his shoulder shape. I also ended up adding a non-slip pad, which he doesn’t mind, but I would NEVER be able to use on either of my Arabs. He didn’t have any trouble with lateral slippage, but the saddle would slide back during the ride, even with the breastplate.
I have heard that many people put the thinlines under their regular saddle pads to help with slipping. I did try that, but didn’t need it on the Arabs, and it didn’t help much on the TWH, so I went back to putting the thinline over the regular pad.
As other posters have noted, tighten the girth as much as possible. Because the treeless saddles mold to you, they will compress some when you sit in them, and the girth will loosen.
In my experience with treeless saddles, the pad and girth combo is really key to help stabilize them. It’s a lot more important than with treed saddles, and worth spending the time/money to figure out what works.
These combinations have worked well for me.
Best of luck!