A slight correction to your terminology, M_bro...
In the UK, the abbreviation 'FI' is used for a Flying Instructor. 'CFI' is used for a Chief Flying Instructor. The US, however, uses 'CFI' for a Certified Flying Instructor** ie the equivalent of an FI in the UK. I only mention it so that when you're looking at various place's ads for instructor ratings you'll compare apples with apples.
**NB: Usually single engine. A multi engine instructor is an MEI & an instrument rating instructor is a CFII although they are all 'flight instructors'.
Last edited by Tinstaafl; 5th Sep 2013 at 22:32.