On rudder tow in....Bill Roberts told me that you want between 1/16" to 1/8" toe in...that is... the distance between the rudders center to center is 1/16 to 1/8" shorter on the leading edge than the trailing edge. At least that is what he recomended for my Supercat.

When I bought my boat the former owner he had them set up all wrong...so bad I couldn't even tack the boat...on every point of sail it felt like I was pulling a 5 gallon bucket behind the boat... that all went away with tunning in the rudder tow in.

Regards,
Bob