I would have to question these numbers. The Tiger is 227 sq ft total(STX main) and the 18 is 220. Tiger jib is 44 sq ft and the 18 is ?. ST main is smaller than STX, correct?

Regardless, we ran as a 67.7 at Catfest so I think Dings' calculated 66.84 must be close to correct and will be the number I use forward. Interestingly enough that is the number I had calculated but was unsure about last year.
Thanks for the input!

For the record, this boat wasn't built for racing. It is my attempt to keep me interested in sailing as I feel drawn toward other sports. I most wish to own a boat that would allow me to solo sail safely, but money is always an issue. I am very pleased with the looks and performance of this boat, its an '82 model. It just had its first bottom job and sports original gelcoat. I have wings for it as well. Adding the spin gives me the pucker factor that was missing and creates a new challenge. Not to mention speeding up my trips along the coast.