This is an ARC . I used Brodak covering. The stuff worked well for me around the tips and corners. Actually my 12 year old step son gave me some ideas on the flap scheme. He did pretty good. This is by far the best covering job I have done, but it still holds to my reputable goofy mistakes. Thanks for the replies as I will try to keep this out of the ground and take it to the nats this year. Intermediate.