Simple question.

Q: Which way does the stern of a boat t-boned to a dock turn when, with the
rudder turned to port and the tranny in forward, you give a 2 second burst of
the engine?

A: I think we all agree the stern will move starboard.



Q: same question but rudder turned to starboard?

A: the stern will move to port.



Q: same question but rudder centered?

A: the stern will move to port due to prop walk



Q: same question, rudder centered, but tranny in reverse (bow of boat tied to
dock)?

A: the stern will move to port due to prop walk



Q: same question (tranny in reverse) but rudder to port?

A: the stern will move to port due to prop walk



Q: same question (tranny in reverse) but rudder to starboard?

A: the stern will move to port due to prop walk



Anybody but sherr doubt that? (forget the "good professor". he uses the word
"prop" when he means "rudder" and he wants to argue that friction in the rudder
bearing makes the difference)