HUH? Fly! If the area is not in the final approach course or departure corridor, why worry? Don't live or fly on "What If?"! There are alot of airfields with departure corridors towards very busy roadways, same with the final approach. So, which is worse, your small area of BMX or the critical phases of flight? If your club was not asked to implement a no fly zone, then don't. Yeah, maybe bad manners, but so is theirs.