Here's what the manual says:
To measure the amount of mast rake, your mast must be up with your rig
tension snug. Lay a carpenter's level on the trampoline just aft of
the hatch. Adjust the boat until it is level fore and aft and
relatively level from side to side. Attach a one or two pound weight
(a heavy wrench will work) onto the main halyard. Using the main
halyard as a plumb, measure the distance from the aft edge of the mast
at the black band to the center of the plumb. This distance is how
much mast rake you have. We recommend between six and ten inches of
aft rake. You may find that you prefer slightly less or more.
Of course, on the Hobie most people use more rake than their manual recommends. Several people have suggested to me that the Prindle needs less rake than the Hobie.
I am still rather a beginner, and don't claim to have an opinion that is worth much on this ;->
Jonathan
