The point of this scenario is to survive planes crashing into your ship. (Mini ones, mind you.) There will be 5 waves, with 20 kamakazis each wave. You can shoot these planes down with your main guns. The one(s) who survive the attack are the winners. Pros: Interesting gameplay. Entertaining Cons: Planes cost money. Could sustain enough damage to fully cripple a ships hardware.
The main problem is spectator safety. Firing lots of bb guns into the air is going to be pretty down range.
The point of Kamakazi is to crash into ships, not strafe them. Anways, your going to have to be flying pretty low because of the wind, so that wont be a problem.
Most if not all clubs limit gun elevation to 0 degrees or less. Even with these flat trajectories, being hit by an errant shot is fairly common. Fast gun ships generally do not have the elevation servos found in the big gun clubs and even then the servos move the guns from a little down angle to a bit more down angle. So to be hit the a/c would have to be skimming the surface and very close to the ship.
This sounds more like a video game than anything that would be practical to attempt in any of the scales we use, 1:72 being the largest.