Location
Over the years I've heard a number of people talk about putting it in the forward hatch. Tom makes a good point about the sound. They are pretty quiet, but tend to make a little more noise after a few years.Remember that this is a hole in the boat, no matter where you put it.If you put it in the head, and water comes through, it has a place to go...right to the bilge. I did have a few drops from time to time with wind and rain.Cutting the hole in the deck just isn't that big a deal (I need to do it twice in our new C42!).The location is very good...I rarely found it in the way. After 6 years, I wouldn't hesitate to put it right there again.The vents do die from time to time. They last 4 years or so. Replacement, takes just a few seconds...as long as they don't change the size of the hole.