Re: Gator Gar
Hmmm...well, they are predators so I would imagine big bait fish patterns put in front of their face should tempt a strike.
I think the biggest challenge is going to be puncturing the jaw on those things.
When bait fishing, at least from my understanding, when a gator gar takes a bait, the angler should allow him to take it for a while. Typically, you will get one run, followed by a pause, and then a second run. During that pause is when they actually swallow the bait so the hook set is generally done on the second run.
This is my experience with long nose gar as well.
I am not sure how you would accomplish that on the fly and if the fish would even swallow the fly once it realized it wasn't a meaty snack.