How do your prospects know about you? Are you persistent and consistent with your artillery: touches, message and efforts? There are many tools to keep in front of your prospects; CRM or tickler system, phone calls, follow up emails, personal notes/cards and various other tools including special offerings and promotions. This is the Marketing process; making the prospect aware of who you are and what you sell. They should get right to the edge of being slightly annoyed... the one thing it shows the prospect is that you want their business.