Some of the guys at the local RC club (Brindlee Mountain RC Club) and other clubs around the North Alabama area have designed a plane for full contact combat flying. The whole object is to bump/crash into the other guy(s) and have their plane hit the ground before yours does.
The current Warp has evolved from a design created by another "Don" who goes by the name of "Miderror" on the RC Groups forum thread "Don's Blue Plate Special"
which is dedicated to these and other style combat planes. There is a video
(20 megs) here showing the action between 2 Warps and 4 other kinds of planes!
The plane is made of 1/4" blue insulation foam available at any of the larger home improvement stores. This foam is inexpensive, easy to repair with hot glue and can take a lot of punishment. The Warp pictured below has been repaired many times but still flies beautifully!
One thing to ALWAYS remember, the tail fin is on the BOTTOM when the plane is flying normally, it looks like it's flying upside down. When you launch the plane, make sure you don't have the fin up and pull back on the elevator thinking it's going to go UP! It won't! I know this from experience. The picture below is really of the BOTTOM of the plane.
This Instructable is intended for people that are familiar with building and flying RC planes.