Battery power

Battery power is a real problem on most boats, has anybody used trailing generators, wind turbines or solar panels? Share your results / problems with everyone.

Having spent the Med winter season sailing in Langkawia and Thailand we have been teaching on a Beneteau 350 fitted with 2 x solar panels and a wind turbine. On a 3 week trip we did not plug into shore power once and did not need to start the engine to charge batteries. Is the conbination of panels and turbines the way forward? Problems we noticed are that first you have to fit some kind of frame to fit the panels and keep the turbine from slicing the crew in half and the frames tend to ruin the lines of any yacht, secondly the wind turbine can be noisy and slight vibration can be felt throughout the boat.