Join Date: Jul 2000
Location: Herrington Harbor, MD
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You will need to bond the zinc to the propeller assuming that is what you are protecting. It is unusual (though not impossible) that the rigging is connected electrically to the underwater components. You could check that with a multimeter. Assuming the guppy is on a wire with a clip at the end, then clip that to the engine, or drive shaft, or any component that you know to be in electrical contact with the underwater components to be protected. If you know that your rigging is bonded to common ground then you can leave it as is.
As Dwayne mentions, these anodes are usually less effective because of poor electrical contact than the proper zincs that are installed in hard contact on the propeller shaft, or on the engine, but they fall under the "can't hurt" category.
Last edited by wwilson; 05-21-2009 at 10:25 PM.