I started checking out Aussie saddles on craigslist using tracings of my big old quarter horse. I found a pretty cheap almost unused 17" stock saddle. It seems reasonable quality and isn't just for a skinny withered horse.
It's quite comfortable but I'm wondering if it is too small. When I sit in it the tops of my legs lightly touch the polleys. When I try to apply pressure with my knees I find my knees pressing air. As I apply pressure my legs go into the polleys and push my knees out. I found I could manage to get my knees to touch by sitting high and back on the saddle which isn't exactly practical. I'm thinking I need an 18" or larger.
Any members with Australian saddle care to share an opinion. Not being able to touch my horse with my knees might make my horse happy but I'm not so happy.