Can you get them out of the holes in the bank? Have often wondered if that is possible and how it could be done quickly and efficiently.
My wife used to drop a piece of raw bacon on a string down the hole, wait a few moments and then pull it out with the crawdad. A friend of mine used to go crabbing out east using the same basic principle. He would stand on a dock and drop a hand line down with bait on it, wait a few minutes and carefully bring it back up. Quite often he would have a crab on the bait and they didn't know enough to let go.