SteveJ that is some gar in that picture. I was raised on the gulf coast and we use to go around in the channels, intercoastal. bayous and river around SE TX and we use to see 10' long gar from time to time. Even use to go to the local Boat basin and shoot them with bow and arrow at night.
However, another good pull we use to get at times was in a refuge near there where you could pull your boat over this levy and catch bass and blue gill. Sometime things would be really slow in the mid day sun so this place was also fill of alligators mostly small ones up to about 4' long. We would pick out a top water bait we didn't care if it didn't come back or not and cast it right in front of a sunning gator in thee water and they would always take it. Clearly thee fight was on, but had to cut the line when it was over for thee obvious reason of not being able to deal with a gator in thee boat, LOL!
Heck of a way to get your line stretched!