Instructing is not all it's cut out to be, at least on the open water level (for me)
I began instructing in Alaska, where PADI standards weren't high enough to give the acceptable survival rate of %100. As a PADI instructor, you can't go above the scope of the class as it is laid out without a very specific waiver with someone from PADI's signature.
I was informed that SSI pulled out of the state.
As for cattle boat diving, I've witnessed a panic attack on certified divers every fifth trip or so. Reason: improper training.
I do enjoy watching the look in someone's eyes as it all comes together. I don't enjoy certifying people as Scuba Divers because they don't meet the requirements of OW diver.
Everyone told me there was no money in instruction. I believed them, but thought it would be cool to instruct.
The way that PADI has saturated the market with instructors has got me thinking giving up OW instruction all together and teaching Cave and tech stuff.
Good luck, which ever way you choose.