One gets at least 9 times as much good from 3 things than only 1. I would also find a good Chiroptactor and consider stuff like Rolfing. Once a Baker's gets large enough the individual will probably have to have it surgically removed but at least they can prevent a recurrence with the above. If you do not hear from Doc Dave soon, write again with his name in the title to draw his attention. I too have a cyst behind the knee.
Drainage helps for awhile.
This search on excite is very frustrating. Baker's Cyst is the tip of the iceberg. James, You have probably happened onto this bulletin board through some search engine. Dr. Stoll has written often on the subjects of surgery and arthritis, and obviously he can't repeat all of it each time. That may be why his answer seems inadequate to you.