The point that started all this was that you can't simply used parts of an F18 on a singlehander and expect it to well behaved, even when the same parts are well designed for their F18 use.
Of course it is all right they design has been changed with respect to boards, but the made made earlier was about using the F18 alu mast section and rightability. I doesn't help much if one mistake is corrected while the same mistake is being made in relation to another part.
As such this part of the discussion arcs back to Andrews comment were he questioned how a well designed part for the Nacra F18 can be wrong for the Nacra F17.
By the way the reduction of the board area was 30 % of the total. One could call that "only a couple on inches", but that would not convey the right magnitude of the change.
... People do research and learn stuff, ...
and then most often they try to make the same mistake somewhere else, expecting different results.
But you are indeed right, this shouldn't matter to us F16 sailors at all. It is probably wise to drop this tangent.
Wouter