Many thanks Kirk for the the detailed review. Particularly invaluable to get some insight into part replacements
. I'm going with a Norvane and will seek out the extra delrin bushings in addition to the standard spares.
I've got a small boat with an outboard rudder
and have been tempted again and again by the possibility of installing either an off-center mounted hydrovane
($$) or the more traditional trim tabs. Both fairly lightweight and unobtrusive. Unfortunately, months of thought and research
gave way only to long hours in front of the computer and mounting indecision. l always seemed to come back to the Norvane.
The Norvane has the deficit of being a bit less protected from strikes than the hydrovane
and the hydro doesn't introduce more lines in the cockpit
, but the Norvane is less than half the cost and appears by all accounts to equal the hydrovane in performance and quality.
Regarding trim tabs, I have always been a bit turned off by their diminished heavy weather
performance. They also obviously don't offer as much redundancy. Suppose I could still take advantage of the outboard rudder
tho and use trim tabs as a backup to the Norvane!
..Anyway, thanks again.