Peter, - "You could consider building a low volume rectangular shaft below the waterline, with a casing around the leg that slides down inside this shaft and closes the hole when the motor is either up or down."
You might be onto something. But instead of rectangular what if it was a round duct to enhance the flow? Something like the item Mike suggested? Except that it could be sealed fairly easily.
The only thing though is I think a feathered prop would offer less drag when not in use.....
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Posted by: taladorwood@yahoo.com.au
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