Actually I think that this sort of activity at a club field is one of the things that could bring new people into the hobby.

Years ago I went to a fly-in in Minnesota inn Owatonna, Watts over Owatonna. I try to go every year, this year it was cancelled. At the time I was working in Minneapolis and I invited some of my co-workers to come and watch. One of them came with his young son and was fascinated by the variety of planes, quads and helicopters they saw. They are both involved in the RC hobby now, though at a different field closer to home. This is one of the things that bringing a group of people together can do, it can draw spectators from outside the hobby.

There were many people who took the time to talk to my co-worker and his son bout what the hobby was all about and to show them some of their models. I think that inviting the public at large to events like this is a great way to try to bring in new blood.