ASA and PSIA Instructor
Join Date: Apr 2000
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Your forestay tension will be the same as the backstay tension, unless you can bend the rig with your uppers, which seems not likely in this boat.
Why do you care what the tension is, you should only care how the jib sets, if it sets ok, the tension is good... When you are beating into a breeze, how big a curve is in the luff of the jib. too large a curve and you need more stay tension (set by backstay...) so you will point better. How much curve is ok is a judgement call, but something like six inches would fit.
If the backstay is loose to the hand, the tension is probably not enough, mine is tight as a piano wire.
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