Re: Is external rudder a good idea?
As far as I can see on a smaller boat like the one in the picture it is neither good nor bad. As a boat get larger and ventures farther offshore, an outboard rudder is a lot more difficult to use as it is a one to one ratio. However, I love outboard rudders for offshore cruising because it is so cheap and easy to build on a reliable windvane that works superlatively, a major plus.
"Any idiot can make a boat go; it takes a sailor to stop one." Spike Africa aboard the schooner Wanderer in Sausalito, Ca. 1964.