Can anyone cite an incident in the past 10 years where a cruising boat needed firearms on board in the areas contemplated? It has never occurred to me to have a gun on board for defensive reasons. I am comfortable with guns, enjoy them for sport, but I don't duck hunt or skeet shoot off my Hatt. Like Woody Hayes (or was it Darryl Royal?) said about passing the football and why he avoided it. Guns in the hands of people who are not well trained and practiced... there are three things that can happen and two of them are bad.
I take it you armed and dangerous folks wear a PFD and a helmet all the time you are on board? Do you have jacklines installed and harnesses? Much, MUCH more likely you will die or be injured for lack of having one of those on. It's funny how people obsess about trying to protect themselves against issues with an infinitesimal chance of happening, and only marginally mitigating (if not exacerbating) those issues at that.
One man's opinion.