It is a terrible blow to find your flock has been ravaged, by anything. I know what kind of stomach twisting experience it is, and I'm sorry you have had it happen to you. Live traps and dogs are both good, along with your fortifications. 
I disagree that only a coon-dog is any use. I've known a lot of people who had or have good dogs that protect the chickens, livestock, etc., that are not coon dogs. A lot of them are just plain mutts. They need training in order not to be a problem, themselves, but that's true of just about any dog.
I have a funny-looking brown dog, not a coon-dog, basset hound and who-knows what. She's the one who treed the raccoon. She's the one who chased and caught a fox repeatedly one summer, until a neighbor finally shot it. We knew it was the same one because of the chewed up rear paw where Cleo kept catching him. She wasn't big enough to kill him but she kept him from getting even a single chicken dinner that summer. She's also evicted 'possums from the hen house, several times. She just goes in and gets them, carries them out, lays them on the ground, and watches them, to see if they're going to move or not.
I also have 2 lab mixes who chase off anything that doesn't belong, and a sheep dog who joins in with any of the other 3, just for fun.
I wish you the best of luck in resolving the problem. Maybe a few raccoons in the freezer will help make up for your losses.
BBQ 'coon sandwiches are good. Also good roasted, with potatoes and carrots, onions and garlic.