WindyHill,

you cannot start calculations as a Hobie 18SX because your platform is not SX. It just ain't right, as they say.


Therefore, if your jib is the same as stock, then you'd take the hit for the main and the chute alone, yes.


But, if it is NOT a STOCK jib, then you should, to be fair, take the "other" adjustment:

Other
Any other deviations from standard class configurations, including the addition of wings, can be assessed a penalty of at least 0.995. Multiple deviations may incur multiple penalties. Penalties may be greater than 0.995. Please identify any such modifications and penalties assigned and include with results reported to the handicap committee and Portsmouth Numbers Committee



Like Rhino said, depending on the oversize or not of the main you would need to take the 0.995 (which is the squarehead adjustment, 5% larger OR LESS) or the 0.980 (which is the oversize main 5% larger OR MORE).


I maintain that it would not be right for you to start as a Hobie 18SX, since your platform, as you have stated, is 18 Magnum.


I'm having similar issues with my Fboat, which is heavily modified. I'm knocking myself for modifications which aren't even listed, and using the 'other' .995 calc. for them, based on what I'm getting hit for vis. PHRF number recommendations.

Just take the hits. People will whine no matter what, but at least you'll be in a position to say, 'well, I took the maximum knock' when you go kickin they butt ;-)

sea ya
tami