Fishing smallmouth with dad back in the 60's out of Port Colborne, we would always go to one of the local clay bottomed ponds with a triangular framed , fine meshed net and pick up several dozen crawfish apiece. Don't think we ever fished them any other way, number 4 or 6 baitholder beak hook and a few splitshot ?. Now you can't do that, illegal to transport crawfish due an invasive species.