Nautique has a long way to go to catch up to Epic on their Electric Boats.
Epics 232SE has been seen pulling team riders almost every day at their local Lagoon recently, they are usually out there for 3-6 hours at a time. It throws up a pretty mean wake with no ballast and can still run 40mph.
Its not uncommon to find 220VAC 50A marine service outlets at a marina, the 232SE has 9000 watts of on board charging to take full use of this service.
Check with their European dealers if you want more information/video since they are the ones selling them. http://www.epicboats.com/pdf/232se_Brochure-Web.pdf
As for the safety aspect, I would be more worried about sitting on a 50 gallon tank of extremely flammable and explosive liquid otherwise known as gas. Then having several thousand volts arching at just the precise moment hundreds/thousands of times a minute.
No its not for everyone, and its more expensive than most can afford. But that didn't stop the Tesla Roadster from paving the way in their industry. They first delivered product in 2008 to the tune of $110k plus, and now in 2011 you can go to your Nissan dealership and buy an electric Leaf for around $30k. Its not going to replace internal combustion boats, but it gives consumers an option if it makes sense for them.