yes, definitely a good point nwaring! you should definitely have one in the cabin as well, if not two...although one below should be sufficient for that size boat. If it has a mid-cabin, that is probably where it should be. Also one above is a good idea too. One like this
http://www.lowes.com/lowes/lkn?action=p ... lpage=nonewill give you an actual reading, so you have an idea even before the alarm goes off

. I'm telling you this, as I add this to my list because I want to make sure to get another one for my cockpit area, if nothing else for the "station wagon" effect that can happen.