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 Any kind of addition such as wings ect regardless of design create drag 
which equates to more energy spent slower speeds and less monouvability  
only addition that I can see helping at our speed is the addition of fairings to 
try and streamline our existing designs why would one want wings(fins) when 
one  has no laminar flow over them that means they are permanently stalled 
in other words not functioning  I remember when I used to fly a Cessna 210 
I owned a couple of years ago on circuit one of the things one would do is 
deploy the landing gear it used to feel as if you put the brakes on I now fly 
only helicopters and  at slow speeds rely on Thrust I know water is a 
different medium but I think the design of most psubs are not exactly designed 
to be speedsters after all you not exactly cruising hundreds of miles but 
the very fact that they can hover and are slow make them very appealing to me 
flying fast through the air is boring but capturing game or rescuing someone in 
the mountains is great besides most a/c are so designed that if you let go of 
the yoke it will fly its self how boring . at present  airbus is training 
special dogs to fly in the cockpit with there pilots and they are trained to 
stop the pilots from touching the controls the pilots sole purpose in 
future on fixed wing will be to keep the pax happy joke .He;licopters 
are difficult to handle at low speeds which I am sure my K350 will also be 
especially in open seas but I think regardless of how unstable it may be 
with practice one should be able to master it where as a stable boat will be 
easier to control but harder to manouver.Without proper research any wing design 
could make the boat uncontrollable at slow speeds.This Is only my opinion I 
could be wrong. 
All the best 
GlenSA 
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