do they taste anythin' like crayfish?...
I don't know how they taste, but they are pretty good fish bait, once you get them out of their shells. Well, I don't use 'em for that, but I have seen it done.
My kids used to like catching them for pets too, when they were younger.
One night, in college, my brothers and I went frog gigging in a canoe. We only had one gig, so also took along a baseball bat and a net, both worked good on the bull frogs, we got a lot of them. The frogs taken with the bat didn't look as pretty as the gigged ones, but the legs still tasted as good, once we got them fried.