Fishfinder Anti glare screen

Any of you put a anti glare screen film on your fishfinder? Mine gets really hard to look at and with salt spray on it if I wipe it while I am fishing I am afraid of scratching the screen.

Spray bottle with fresh H2O.

I use Windex to clean my fishfinder screen at home, which eliminates the nasty reflections you get from dried water deposits on the screen.  However, I haven't tried Windex out on the water.

Another thing which reduces the reflections on a fish finder screen is to point it towards something dark.  If the screen is reflecting a bright sunny surface, it'll be a lot harder to read than if it is reflecting a black surface.

They have a "Rainx For Plastic" but I dont know if its for screens. I use Rainx for glass all the time very good stuff but plastic ah.. not sure?