After breaking 3 ##$@@ blades on my tornado this summer, I am throwing the crap moving arm system away and installing a prindle rudder set.
The best setup for each boat is not necessarily the same. The Tornado and A cat are not exactly beach cats - they are racing cats.
The Tornado system is designed to be light and is far from being the best for a beach cat. If you can, weight the Tornado parts after removing them from the boat and then compare weights with the Prindle parts.
But if you use the Tornado as a beach cat instead of racing, then the modification makes perfect sense.
Cheers,
