You guys both made valid points about the complications and limitations of new technology. These are typical growing pains for any technology. There are countless examples of that in PC, TV, cell phone and other industries, etc. Obviously, any new technology needs to be tested and "proven" before it can be embraced by the masses, made widespread, affordable and easily serviceable. Again, I will provide hybrid cars as a good example/precedent. I would never buy a hybrid car, let alone three of them if I didn't feel comfortable with them. The risk I took actually paid off with big rewards over the long run. There were article about early Priuses used by taxi drivers somewhere in Vancouver, BC going to 300,000 and above without any repairs. Sure it made me comfortable. What did not make me comfortable is taht should something happen to this "hybrid drive", I would only find a knowledbale service at Toyota dealership. Only they have mechanics specifically trained on hybrid engine. Luckily, I have not heard of any failures to this day. Yet I had a numerous close calls when running my hybrid vehicles low on gas. There is always a reserve of battery power to continue without gas engine but you risk an expensive ECU repair if the system fails. Talking about a true hybrid boat technology of today, it would not be similar to hybrid cars. You can't regenerate braking on the boat, manipulate speed and acceleration like you can do on the road. The best solution for the boat for now would be a combination of few safe technologies: - diesel or LNG engine - electic engine powered by: - rechargable Li-ion batteries - solar cells The way I see it, I would be starting my fishing trip/cruise on a fully charged batteries (in Flroida solar should be always available), crusing at some 5-7 knots for 2-3 hours. Solar cell would continue to charge throughout a trip and give me an extra range or supplying accessory power. When I need speed or as a backup power I would use diesel/LNG at the boat hull or crusing speed. The result is much more expended cruising range, redandancyavailability of different alternative power sources, huge mpg/saving. P.S. And btw, current battery technology is sufficient to achieve this goal. Battery weight is much bigger factor on light cars light Tesla or bigger SUVs like Highlander vs much heavier yachts where they can serve as a good ballast.