...start to
RACE!
but.. SLOWLY!
There you go the rule for a BOP plane
SLOW RACE, it's fun. try it lol.
winning condition: the last who arrive win, ( so the slower ) or the pilot who have less death at the end of the game time.
rules:
1) every pilot have to fly the same plane, different plane have different stall speed, so to be fair same machine needed.
2) define a maximum height, like, 70 meters. Lower is better, but of course harder.
3) pick a map with something to follow ON GROUND like a road, like rivers in berlin, railways, or dover cliffs etc etc etc.
game starting:
* every pilots allign their wings below the defined height, flying side by side at same speed, starting to follow the designed path ( rivers, railways, cliffs, roads... etc )
* race start when everybody shoot a salvo or says that are ready on mic
...then obviously the aim will be to fly after your opponent without stalling or crashing longer than he could

without looping

Rivers in berlin are quite challenging because they are narrow and they have lot of bridges with lamps post on it