Fred,
I've considered the electric horns for a couple of years now, but my keep it 
simple rule has prevented me from doing anything about it. I noticed the 
latest WM sale flier has some nice large horns on sale. :) I always keep my 
compressed air horn in the cockpit, usually up against the stern where it's easy to 
reach. Another method to try might be the spud gun. I've heard that several 
list members have had great success using them on pwc's.

Rummy