Mast Rake, is actually independent of shroud length, especially when you have custom(local) made shrouds.

IF, two boats all have the same shrouds, fasteners, chainplates, etc. then, and only then, can you compare holes on a chainplate as apples to apples. Even then they may differ!

I"m not going to go into how mast rake is measured, but it is discussed in centimeters, or inches of rake, not holes on someones chainplate.

One of my shrouds is longer than the other, on purpose. I removed one of the quickrelease shroud tensioners on one side, and when rigging, or de-rigging, I just take the quickpin out of the quickrelease and it loosens the rig. Obviously, the shorter shrould is on the quick-release side, giving me a centered mast.

I often chuckle, when I see some people rig, and to loosen their forestay, they loosen BOTH shrouds up some. Loosen one, in turns slacks the entire three point set up.

I don't use the quick-pins, for ANY of my standing rigging! If the one comes out of the quick-release, it's still held by the other pins.

Wow, what a tangent of of the original thread, sorry.