We heard the call for the snake on the boat too. Not fun. Glad I didn't have to deal with it! However, what I would have done, and for future invasions: Take a fishing rod and tie a large "lasso" or slipknot. Get the head of the snake in the hoop, and tighten it up against the end of your rod. Then you can walk it out wherever you want, and cut your line.....
On that same day (Wednesday), we launched and started fishing Bullfrog Bay. Directly across from the houseboat field that is a small cove (crack) with a bunch of cottonwoods sticking out of the water. We pulled up in there to see if we could pull a bass out....no luck. As we started backing out of the trees I started to pay attention to the branches and leaves. That's when I started hyperventilating. No, not a snake. I could have handled a snake. It was the spiders!! Big spiders -- by the hundreds! The branches were literally covered with them. Pale-green with black stripes, and huge bulbous bodies. Killers for sure! I was freaking out yelling at my brother to get us out of there before they started attacking! Crazy -- never before had my life threatened quite like that! Scary as hell.
I've been in Minersville (southern utah) in my pontoon (float tube pontoon) when I noticed a weird wake coming directly towards me. It took a minute to realize the wake was being made by a snake, and the snake wanted on my pontoon! Believe me: you cannot kick faster than a snake can swim! I was ready to surrender the pontoon to the snake, and abandon ship! I started swatting at the snake with my flyrod, and luckily deterrred the attempted invasion.
Scary stuff.