I started my "EA 4 a year" quarterly contest about 3 years ago to try and encourage a longer term commitment from my team. Too many people quit too soon without giving their business time to develop.
The way the contest works is you earn 1 entry for each month of the quarter you are an EA (up to 3 per quarter). The prize is $30.00 (GC) a month for the next 12 months (if you fail to reach EA remaining months are forfeited)