There are many of us that have never even heard of looking at our horses sweat pattern to see how well the saddle is fitting. If you are having some horse problems in this area you might want to take a look.
When you take the saddle off you want to look for areas that have dry spots which could mean your saddle was pinching your horse or it didn’t have enough contact. If it was pinching your horse on the front end he may eventually get white spots in that area. I use a pad that has air filled cells on each side and ventilation throughout the spine which stays dry because there’s no contact. As you can see from the picture below Mr. Tay didn’t have any dry spots and there was an even sweat pattern throughout the air cells other than I had the pad a little to the right, but overall a great fit!