"The worst boat that I've been on is the Catalina 27, it can do circles without end. The rudder is a little small in size, and not very deep.
If you are not sailing one design, you could have a new rudder designed and installed that would reduce most of the prop walk, but not eliminate it.
It really probably wouldn't do a thing... Catalinas - whether you have 27 or 30+... the rudder simply doesn't encourage being in reverse unless you master the propwalk - and even then - its not a sure thing... "
I'm not sure about your 27, but the rudder on mine was about the same size as a garage door.
Propwalk on her was a feature! The "trick" is you have to get a little water moving across the rudder BEFORE you give it a shot from the throttle. If you don't you're going nowhere, slowly.
