On the AHPC Flyer, Boyer suggests 20mm aft of the rear beam. If you do the traditional trap wire measurment, it should end up around the center of the inspection hatch. As far as the 'set it, forget it' notion. Yes, once you find the amount of rake, that is true. But keep in mind, if you seet your tension on the stays, after a day a racing, some stretch in the line may occur.

After a couple of sails....the stectch should be gone, but you can always re-tension.

Michael