The CFI insurance programs I am familiar with are from AOPA Insurance Agency and Falcon Insurance Agency. The Falcon program is an association policy for members of National Assn of Flight Instructors (NAFI). NAFI membership is only about $40 per year to make you eligible to buy the Falcon coverage. The NAFI/Falcon policy covers instructing in multi engine aircraft and AOPA does not. Any other questions let me know as I was in the insurance business in a former life!