Scampbell, used, WORKING electrofishing boats are like finding the end of the rainbow. Finding the equipment to add to a boat to make it worthy of electrofishing is something I would only recommend if you have the guidance of a knowledgeable, seasoned operator, to help you obtain the best equipment for your boat-if I understood correctly, you have a boat- and want to add from there.
Something that is important is having a heavy-built boat for this. Most are built to have the front in a position it's not far above the water for 2 reasons, one is getting in tight to low hanging areas and two, the wind has little affect on side area so you can hold the nose in position long enough to roll certain fish that require several seconds to roll out.
Like everything, there IS some science to electrofishing too, just like the fishery itself.
And as I said above, beware of Smith-root equipment, we've had issues every time we had a problem with State vessels and ended up specing out new equipment to meet needs.
