On Jan 10, 8:22*am, wrote:
I don't want to tell you what your own proposal was, but I didn't
understand it that way!


What I said was -
The rule should define the "front half" as the semicircle of the
start
cylinder that has its diameter normal to the line between the start
point and the first turn point. A valid start would only be given
for
an exit from the front half.

Note the last sentence.

There may be a trade off between making a rule that defines an area
easily visualized by the pilot and, on the other hand, is easily
scored. Having a fixed semicircle define the full score start area,
but allowing starts behind that area, seems to lead to a complex first
leg distance computation. The RC proposed rule has a very simple
first leg distance computation but arguably a problem with area
visualization.

Making the area fixed and the only valid start area solves both
problems but has a severe penalty if the pilot starts behind the valid
area. I don't think its a better answer than "start anywhere".


Andy