Join Date: Oct 2011
Location: Illinois www.saddleonline.com
Hi - it would be a lot easier to give you information if you post a picture of the saddle on the horse rather than a picture of a dirty saddle pad. Your saddle pad does seem to have a few odd spots on it, but the downside of trying to judge anything using a saddle pad is that saddle pads can accumulate dirt in all kinds of interesting manners - such as brushing against the tack room wall, falling on the floor or even brushing against the dusty, unused saddle next to it.
You say he gets upset during saddling - or at least he wiggles - and has always wiggled. This may just be him. However if he is getting considerably more upset, it is quite possible the saddle is causing him some kind of pain.
The uneven dry spots you report imply the saddle may not be fitting well, but once again, without pics - its hard to give you a definitive idea of WHY the saddle is not fitting well. I'd honestly suggest having a saddle fitter come out and evaluate your horse's saddle fit and give you recommendations for a better fit. I also might have his back checked by your vet or chiropractor.
"Riding: the art of keeping the horse between you and the ground."