I think the easiest way to make more money for your club is to sign up many more members. Have business cards printed up for every current member to hand out to the public. Everyone must know at least a half dozen people in their lives and meet many more on a regular basis. All they have to do is describe how much fun they are having flying RC airplanes, convey that to anyone and everyone they meet and then hand out a business card.

nascarjoe