If your a fisherman or woman needing earthworms to catch dinner, short of going to the bait store, here is another option.
Wait until it rains or wet your lawn overnight. Now, take a car battery, (2) 8 gauge cables, (2) 3' pieces of construction rebar and go out to your lawn.
Don't forget the hammer, drive the rebar stakes 24' apart and connect the negative cable to one of the bars and then to the negative post of your battery, do the same for the positive post. Within minutes earth worms burried in the ground between the two posts will begin to emerge, unharmed of course, now your ready to go fishing. The moisture in the soil act as a wire (conductor) between the two bars.
Same principal applies to thru-hull fittings, even if connected inside the boat with rubber hoses, weather bonded with wire internally or not, if not wired, the water around the hull becomes the conductor. I at least one major metal component, in this case the propeller shaft has a zinc attached we should be ok.
Marty Chin, BCC Shamrock
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