1MOFISH,
Go to Walmart and get yourself a map of pymy and start from there. It'll show you where the cribs are located at and tips of how to catch them. Coldfront is right, you can catch them anywhere around that lake. Not only are there a lot of them, but they are huge. Also, look for places on the map where the water suddenly drops and forms deep pockets. You'll find them there as well.
Slap my hands, but I will spot burn here just a little bit. If you don't care about the size of them and you want to catch a lot of small ones, try the river below the outlet. It's no secret!!!