OK - So I have moved my front straps back about 5cm. I believe the COL on the naish wing is about 1/3 from the front which is about 26cm in front of the LE of the mast. I made a mark on my board where this point is which looks pretty sweet to me? I should be able to place my back foot anywhere behind the red line. I seem to have loads of room to play, not?
My mast position can come back about 4-5 cm as well.
There is wind to tomorrow so I am hopefully going to be able to test it tomorrow.