Join Date: Nov 2009
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Not sure what you are sailing, but in any case a 150-160% genoa rolled to 100% is not going to give you any decent sail shape. It will also be very different dependent on point of sail because of the roll.
On SF Bay, in the winds that occur there, you probably need to invest in a smaller headsail. Talk to a sail maker that knows your boat and see what they suggest. It could be even smaller than a 100% dependent on your cruising plans.