Funny. I don't think of Crawdads as food, they are the little ones and good only for catfish bait.
Crayfish are the bigger ones, those beloved Mudbugs. They really aren't much good unless they are thrown live into the crab-boil. Frozen crayfish dry out. Most of you probably know this but the proper way to eat one is to tear off the head and suck the juice out of the back of it before pealing the rest like a shrimp. There aint no goody in the heads of frozen crayfish.

Good coffee, good weed, and time on my hands...