1.) Use e-mail as the primary prospecting tool. We instructed our reps to keep their initial prospecting emails short and sweet. The goal was to either schedule a live call with your intended prospect or a web demo. You received 1 point for a scheduled call and 2 points for a scheduled demo.
2.) Track your contest and publicly recognize your achievers.This one is self explanatory. Obviously if you're using Salesforce.com we recommend installing our free app on the AppExchange.
Suggestions for contest rewards include gift cards. Here is a link to a great article discussing the benefits of giving gift cards to employees.
Good luck and let us know if you have any questions.