When I stocked my forage minnows (about 1.5 years ago) I also was given a few papershell crayfish. I haven't seen them since and I'm wondering if they are still in the pond.

Is it possible to trap them this time of year? I have a standard minnow trap and a couple of chicken necks, will this work or should I wait until spring? How deep should I set the trap? Any advice is appreciated.