Using the Halyard
Using the halyard is a good method, and one I preferred, however, like any method, a lot is dependent on how stuck you are. Unless you really force something, the mast won't "topple".basically, you detach your jib or main halyard, or any other one running to the top of your mast, and attach it to a long line. Cleat off the other end. The other boat takes the line, and runs it out straight abeam of your boat away from shallow water. Then, they slowly pull the line, causing your boat to heel over. This lifts the keel off the bottom, and pulls the boat in the direction of deeper water at the same time.