Power Pole or making your own similar systems
electric cars are easy to sell... just automakers dont want it to happen!! they look like they would work.. but definitly would put a lot of extra stress on the transom in windy conditions... for us normal guys that have a boat for 5-10 years ... probly wouldnt be a good choice. these guys get new boats every year so theyre not worried about the extra damage it may be doing to the boat.
Something like this product may not be too hard to put together. Looks simple and likely quite effective.
http://www.wanganchor.com/
http://www.wanganchor.com/