The only predator problem I have had has been neighborhood dogs from irresponsible owners who did not keep them in fences at home. They have torn into my coop twice and killed everything. I reinforced the bottom half of my coop with stronger wire (luckily, someone threw out a roll of rabbit wire on the side of the road!) and already had the top covered with chicken wire to keep hawks out. I wish I were lucky enough to have skunks! I love them and would gladly build a stronger coop in exchange for having them around. We had a pet one once, and she was one of the best pets I've ever owned
I am working on fencing the entire property so that the coop is inside a chain link fence with my dog in the fence so that other dogs will be blocked and deterred from trying to get into the fence to get to the coop. A large dog sounds like your best bet. I have also read of people putting a radio in their coops to keep predators away, but I would be surprised if that worked.
