I joined Kiwanis very early in my career and decided if I did I was going to be extremely active.  I am on and chair several committees, will be a Board of Director etc.  I have gotten some pretty large clients as a result.  I don't actively prospect during our Lunch, however, they seem to come to me...I believe this is a direct result of my being active.  We have another broker in the group and he gets virtually nothing from the club.  I happen to know that Rotary is very serious about no "prospecting", Kiwanis however, is ok with it as long as you are not there for that reason only.