After much consideration; place the hull(s) on a flat surface/floor. Measure 613mm from the bow and trace a line down to the keel, 90 degrees to the sheer line. Mark that point on the keel. You now have two points on the keel that are the same on every legal mossie, the 613 point and the transom. 'Rock' the boat until the 613 mark and the transom are equal in vertical measurement from the floor. Record that measurement. Drop a plumb from the bow and transom. Measure and record where the keel is in contact with the floor, from bow and stern plumbs. You now have a maximum depth of rocker and where that maximum depth is along the keel. It can be used as a comparison with other like measured hulls. Would be interesting!
PP
1827
Ps: I guess you could use a string line as the flat surface but several steady hands would be required to stretch it and hold it steady. Therefore rocker could be measured with boat on trailer, if there is clear access along the keel. ??

Last edited by Phillip; 11/22/13 06:33 AM.

Tortured ply is clearly beautiful.
Mozzie Aldebaran VI
1827