I had a great ride last weekend with my little mare. She conditioning was great, even though it was hot and the trails were awfully hilly/rocky. Our only problem was that after our first day I noticed some heat and swelling of the girth area. The swelling was in the "arm pit" area, way forward of were my girth usually sits. My saddle tends to slide forward doing downhill, so I wonder if my saddle pulled my girth forward on the downhills and rubbed her? (I use a mohair girth, by the way.)
What should I do about this? Maybe buy a crupper to keep everything a little more stable?