If boat has wings then max width is taken over the platform with ONE fully extended wing. Of course measured in the horizontal plane. This is the right measure for the leverage a trapezing crew creates.

So fit only one wing to the boat and hang a plumb bob or something on the far much outer point on the wing near to the maximum width of the platform (no wing) itself and measure the distance between the the point on the outside of the hull on side and the plumb bob line on the other.

Gee man I never realized that NMBR could accuractely rate these boats modified in this way as well. So if one leaves off the wing and another doesn't then NMBR can accurately rate both relative to eachother.

Any FX-one sailors with wings present on this forum ? If so can he or she give us the measurement described above.

Here in the Netherlands FX-one sailors split halve between winged ones and non winged ones But I won't have access to these boats for some 5 months.

Wouter