Pieces of arrow shaft are available at archery shops that make custom arrows. I cut mounting positions for the nylon control horns into one layer of the cardboard, and then hot-glue the horns into place. Putting the horn on the side of the hinge that was cut away makes the surface less sensitive than if you glue it to the other side. At our flying sites, it needs a good, straight-on breeze to stay aloft. It will hover like a kite and turn on an amazingly small radius.
Loops are possible, but they require death-defying dives to get up enough speed.
But combat is another story . The WARP 9 loves combat. Its very high maneuverability and quick recovery into straight and level flight from almost any attitude makes it easy to recover from a hit. Keep the models in close because that makes contacting the enemy a lot easier. Because of the WARP 9's turning ability, you can fly several in a tiny area, which can be very exciting.