I had a loud hailer on my boat one time, too. Its installation had been required by my insurance company. The loud hailer cost me $119.95 and the installation by my boat yard came to another $158.87.
After a race, my crew and I were anchored off a yacht club in Sarasota, FL. My wife was part of the crew. Anchored next to us was a cruising boat with a couple of gorgeous women on it. Married though I was, I couldn't keep my eyes off them. When my crew (and wife) decided to take the dinghy into the yacht club for the pre-awards drinking, I said that I would stay behind for a bit to rest. I'd call them on the loud hailer, I said, when I was ready to come in to the party. They all took off willingly.
The girls on the cruising boat could see that I was alone on my boat, so they decided to do some topless sunbathing. I got our the binoculars. They were the best looking women I had ever seen. And they knew I was watching because they sort of posed for me. It was breathtaking.
Just as it began to get dark--and the party was heated up ashore--the two women put their tops back on and slipped into the water and swam over to my boat and came aboard. I took them down below to dry off, and they took off their suits to wring them out. I mean, these ladies were hot! From shore, I could hear my crew calling for me to join the party. I got on the loud hailer and said that I was just getting ready for the party. They could come out and get me in 30 minutes, I said.
Then I got "involved" with both women at the same time, Their was an entanglement of six arms, six legs, three mouths, some Wesson oil, ropes and carabiners and a whole bunch of libido in the out-of-sight areas of my boat. This had been going on for 20 minutes when I felt someone come aboard my Ericson. It was my wife. The microphone switch on the loud hailer had stuck on the "on" position. The festivities below and all the heated conversation that went with it had been "broadcast" to the anchored fleet and also to the people who were at the party at the yacht club.
I am not married anymore. My yacht was sold as part of the divorce settlement. I am doing 25 to life for shooting my insurance agent. Personally, I can't recommend loud hailers.