That's a great idea Chris.
My buddy let me borrow his trap. It's a specimen container with a lid. The lid has a lead weight on it and is tied up with monofilament line.
I put the food in the trap and wait for the fish to go in.
Took me 1 hour to catch the Lamark Angel a few weeks ago.
It's a pain because you have to wait, but it works. Sometimes they need to get used to the trap for a few days, but eventually the one I want goes in.