Ever thought about just putting this into a Google Sheet in addition to the map? Might be more searchable, filterable, sortable, and useable that way? I would guess that you have all the raw data and can just dump it into a Google sheet. Here are the data points I'd suggest having on that file:
Club Name
Club Home page URL
Organization association (USSF, USYS, US Club, AYO - use columns and mark with a "Y" or an "X" if affiliated)
Primary home fields city and state
League participation (use columns and put a "Y" or "X" if they participate in that league: EDP, ECNL-G, ECNL-B CCL, NCSL, ODSL, SFL, GDA, BDA, ASL, NPL/VPL, SAM )
Ages covered
Genders covered
Registered players by gender
Registered coaches (total and by license level / type)
Technical Director name
Year Established
Recent mergers, acquisitions, name changes
Cover the following areas:
Arlington,
Alexandria,
Fairfax,
Loudoun,
Prince William,
Montgomery,
Prince George's,
Charles,
Frederick,
Howard,
Anne Arundel,
D.C.