Howie, your fox squirrels are different from ours. I live in Florida. We have the Sherman's fox squirrel, which has a black scalp and more yellowish underside, and another rare variant that is almost all black. The Sherman's variety, which I see relatively more often, is very slow moving and easily twice the size of a common gray squirrel. I doubt if I've seen more than two or three of the black ones in my life. I think fox squirrels are still legal to hunt in Florida, but the season and bag limits are very restricted. They are getting scarce, at least where I live, as they prefer a specialized longleaf pine environment that is disappearing before our exploding population growth. I killed a few of them many years ago, but don't hunt them any more. I'm glad you still have fox squirrels in huntable numbers where you live. I remember they were pretty good eating.
Squirrels have tough little skins, and a fox squirrel skin is big enough to be worth saving. The rawhide is surprisingly strong, and makes good whangs. I remember keeping the skins of the fox squirrels I killed, but that was a long time ago.
Anyway, you did some good shooting! I enjoy your posts.
Best regards,
Notchy Bob