gould, NOT unless the boat is making way in all cases where the prop is
*pulling* water over the rudder.

Get your wife to explain it to you. It is impossible to steer by *pulling*
water over a rudder with a prop. Can't be done, except when under the
influence of hard drugs.



It's possible to steer when sternway creates water pressure against the
rudder.

Stick a flat board in the water and try to move it directly forward while
holding it at a fixed angle. :-)

Where can I buy one of those underwater lawn sprinklers that dispenses hard
drugs? :-)



NEVER --
to this moment -- heard of classic "under water lawn sprinkler" paradox that
ALL physics students learn.