RE: tough/chewy squirrels?
Just to echo what Big Guy 01 says......If you want to eat the squirrels in the evening for dinner, crock pot them with a bit of broth or just plain water and some salt and pepper, and start them in the morning on low. The longer you cook those little buggers the better. Just keep plenty of liquid on them, and when the meat is falling off the bones, they're done.