I have been doing weeks of research
(forums for electric cars, websites, youtube,research on solar
, motors, small power distribution and handling, LED lighting
, sailing in danger
us conditions... and the counsel of nerds at work).
are not measured in power the same as engines. It's very cryptic and there is a lot of over estimation by manufactures. It's almost impossible to get real data from numbers except from those who have actually done it. Because naysayers for some reason go against any effort to try new ideas and discourage people from challenging convention knowledge...like only birds can fly.
The selling point for electric trolling motors was multiple videos on youtube of real people with real substantially sized sailboats boats getting 2.5 knots from one 55lb thrust trolling motor
I can move my boat with one motor
...when i need to. And when I need to I will drop it in the water
. Because I understand drag on the cone shaped tip of a trolling motor is such a tremendous drag that my boat might possibly stop in plague as if I threw out a sea anchor
and I wouldn't want to do that when I am trying to push myself with wind
If for some reason I need more power than that...I will drop a second sea anchor
motor in the water and use it to get the one extra knot
to overcome the extreme drag.
I figure if I huff and puff with my lungs and blow a small dc powered ventilation fan in my sails
as well that the extra added force on the mast
will overcome the drag of the second motor.