Posting an invitation on a forum is a good start:-)
Do you have periods when you are less busy? If so, then discounted landing and instrument approach fees might attract some of us.
Are you happy to take students on solo or qualifying cross country flights?
Our school/ club organises a Sunday breakfast fly out once per month. Coventry would be just within range from Redhill I think and it would be nice to go a bit further North than our usual destinations. Will you offer discounted fees for a small group of aircraft like this?