Honestly, flying instruction is poorly paid as it is without everyone flooding the market further while they wait out the poor airline market. With FI jobs getting harder to come by, the next step will be for schools to reduce wages further = no one can afford to instruct. If you don't have any instructional background then you are going into it for the wrong reasons. Having said that, can't blame people for wanting to stay in the game having spent much time and effort on the CPL/IR, must think about the wider implications and weather you really want to teach people.