So, we are going start building a new and better coop for the ladies! We are having a horrible problem with raccoons and have decided that the coop will be moved to the back of the garage. Going to cut a hole out of the back for the ladies to get in and out of their pen. Now, what would be the bast door for it? Something on hinges that bolts shut, or on e that slides over it, or something completely different? It NEEDS to be as raccoon proof as i can get it, so thanks for any ideas that you have!!