lynn and larry pardey have been using a scuttling oar to get in and out of harbors for YEARS , they have a 31 ft sloop(wood hull) and NO ENGINE.
I will be taking out the diesel monger from my boat and installing an electric motor
from duffy elec boats in its place and rolls batteries (you can change each cell instead of the entire battery)siemans solar cells are the best that I have found so far.
your lifestyle dictates your need for oil,AS FOR ME solar and wind work just fine!