I have had good success with compression wraps.  I prefer the MaxWrap product because I can adjust the amount of compression.  Massages have also been very helpful for me; there are some very good massage therapists in the area.  I have also used the Trigger Point products.  Hamstring strengthening exercises also help; I am still gathering input on the best types of exercises for such an injury.  What I REALLY want do to is discover why I am prone to these injuries in the first place.
 
Jim

Dont forget to do some core work too. That can eleviate some of the workload on the hamstrings, particularly a gimpy one.