It has certainly worked great for my uses:
Out on Jordan Lake there is a spot called 'the cove'. On weekends you can find everybody in the cove with their boats anchored. There's usually a big party and a huge grill going on shore. Naturally, everyone has their radios on, but many use different stations. Now when I come on my cabin-cruiser, I broadcast playlists of music from my laptop to the Mod4 Tx on the boat. Since many of the boaters there are part of one big yacht club, pretty much everyone knows to go to my station because it plays music non-stop, no commercials. Even throughout the whole lake, I will go by and hear my station! I will even plug in my mike and broadcast announcements, like if a storm is coming, or the foods ready.