[olavk]

I'm not convinced that the odds are "very very poor". Some names (like Robert Smith or Maria Garcia) are quite common. And a hobby club is not a random selection of people, members would typically tend towards a specific geographic area, social class or culture depending on the subject. Some cultures have a very limited pool of names, depending on tradition.

[bastih]

Just from looking at a 200 member club I'm part of, I can see at least two name collisions in our current club roster. So absolutely agree with your assessment.