We have discussed this issue in depth. Bottom line, we don't endorse the use of home made electrofishing devices by private land owners. We discourage it. Pour a few amps of electricity in water, stir, and you have a dangerous opportunity. Plus, if one doesn't completely understand the dynamics of fish populations, and is able to evaluate data, electrofishing is not particularly useful. It ain't a toy, fellers.

Teach a man to grow fish...
He can teach to catch fish...