Sorry, I should have prefixed my original suggestion with, "assuming you're racing off one of the F16 handicaps". If you're going to claim 1.03 then you should not state that you're F16 as that will indeed cause confusion.

Owners of fully-optimised F16s are supposed to race off the F16 rating - the bigger main means they're not entitled to the Stealth R's 1.03.

The grief you're having with the Stealth's rating is one of the things that makes formula racing attractive: builders and buyers both have a desire to gradually improve their boats. A formula system allows this to happen whilst retaining on-the-water racing off a single handicap (OK, two for as long as SCHRS scores 1-up and 2-up differently).

If you're racing at an open that includes a mix of configurations, you might consider racing Stealths and Stealth Rs off the F16 handicaps. To an outsider, seeing 6 F16s on the score sheet looks like a more interesting class than 3 F16s, two Stealth Rs and a "Stealth R minus large jib plus F16 main". After all, this is how we race at events like Datchet and Mumbles.

When I raced my Stealth R, I was always much more interested to see how I did againts F16s *on the water* than worrying about that last percent of handicap against completely different boats.

Paul