You can use the ankles as well; pictures are under this forum somewhere. You either need to clamp the unit to your thigh or buy the longer cord and put it in your pocket.

As for other things...a friend tested that out and had some success but the zapper appears better, especially if used with T.E.N.S. Electrodes. The ones that come from SOTA don't have a resistor in them and the UZ alligator clips will attach easy.

The wrist is the best because of the amount of blood flow and convenience. If you use other types of electrodes they aren't designed to penetrate through to the blood. Another approved area is on the ankles but it has half the blood flow. Someone claimed to get good results by placing the electrodes behind the knee, but it is not approved.