but the real question is still why do you want to become an instructor, and why are you trying to go the fast/cheap route instead of following a slower mentor type progression?
That might be your question TBone, but it's not mine

. Let's assume the person has their reasons, that they have considered why they want to be an instructor, and that they have realistic expectations about not making a living at it.
So, is it easier to be an SDI instructor that then transitions to TDI, or does it make much of a difference? I've personally had instructors that were PADI Tec and TDI and NAUI Tec and GUE, so clearly you can be affiliated with several agencies at the same time. And I don't see an issue with PADI Tec for an instructor who has the proper skills. After all, everyone says it's really all about the instructor, right? Not the agency?
So question 1 is what agency is the fastest/cheapest to become an instructor (sounds like maybe something in the Florida Keys for a few weeks would do it).
Question 2 is, if someone wants to be a technical instructor as well, does where you get your recreational instructor cert matter?
Question 3 is, do you have to be able to teach a lot of different recreational courses to teach technical diving, or is there a certain level of recreational instructor you have to reach before you can become a technical instructor, or as soon as you're an OWSI (or equivalent) you can become a tech instructor?
Thanks for the inputs.