There has been something going around my mind for some time …..
I remember a pre-crash remark from Bruce J that he hardly sees any up-hill built (Quarter) horses anymore, but a lot of horses that are level built or even down-hill. I observe the same over here in the QH type of horses.
I understand from he „rigging type..." topic that rigging position does not effect where the saddle sits on a horse's back, provided the tree fits the back. (Where a specific rigging position has to be positioned, see "point of reference on a tree"). I also understand that the full rigging position might not be the best choice as it applies most of the downward pull at the front while a rigging set back a bit "spreads the pull over the whole tree, not just the front of it".
I would think that for a riding horse that has to carry a saddle it would be best if he were built up-hill with well defined withers. Let us assume we have another horse with the same back conformation, but he is built down-hill. And we have a saddle that fits the identical back conformation of both horses.
Now I wonder: Regardless of the rigging position, would not the down-hill built horse have to carry more "weight" on his front end because of his built? Would not a saddle rigged let us say ¾ have the tendency to move forward – regardless that the bar configuration nicely fits the back shape itself, but just because the horse is built down-hill? Wouldn't that even increase the effect that the down-hill horse already has to carry more "weight" on his front end because of his built?
Besides not breeding/riding down-hill built horses can the trees somehow be altered to lower the level of discomfort caused by their built? Do you do some modifications to the saddle tree / the saddle when you know it will be used on a down-hill built horse?
Tosch