Just for starters. No, I am not that annoying ass hole that wants to blow a horn all up and down my water ways. I just like toys and want to install an air horn with compressor and tank on my Bennington. I have never done this; however, figured someone has. Looking to see a few installs. I'm thinking compressor under the helm and sealed tank under the deck and horn under the deck and rear facing to avoid water probably a slight down angel as well for drainage purposes
I thought about this years ago when I realized the stock horn was pretty worthless after a guy not paying attention nearly hit us in the marina. Never added one, but after having the boat a number of years now, I wouldn't hesitate to mount it to the bottom of the deck up front a foot or so back under the lip of the deck. I don't think water would ever hit it. If it does, you'd have to be really close to water coming over the bow. On our lake, that would be nearly impossible.