After the Club has formed, things to consider when hiring a broker:
Get several recommendations from people whose judgment you trust
Interview each candidate in person. Make sure they are accessible, have time to spend, and are comfortable working with an investment club
Ask about investment philosophy: How do they invest their own money? Are they comfortable holding on to stocks for a long period? If not, go elsewhere.
Get the names and numbers of several references. Call them before you make your final decision
Compare the fee structure and services offered with those of discount brokers. Do the extra services justify the added cost?