I know lots of people who are dealing with high hamstring pain, usually where the hamstring tendons attach to the pelvis at something called the ischial tuberosity, or more commonly, the sitz bones. I’ve had problems here ever since slipping in mud years ago such that my left foot went forward and put me in a split position. Not good. I’ve had the most luck with sitting on tennis balls for massage of the area and a variety of stretches and strengthening exercises. I’d definitely recommend working with a physical therapist on this one.
For some initial background, this article seems pretty reasonable. Weigh in with what you’ve experienced and how you’ve treated it, and we’ll compile the best recommendations here.