I measured up the whole thing at some point. I was commish of a big competitive league.
AFAIK - 6 and 2 is short. 6 and 3 is long, so I disagree with the lose-o-meter.
(Love the name to be honest).
These are the key points.
The circle must be over the centre of the throwers
square. (Yes, I drew on my board).
Red line must pass through the
centre of the recievers
quare. (Crucial, because sometimes, if you tweak it a little, you can fit an extra square under there).
If the range divider passes through any part of the recievers square, then take the longer range!
Finally, and this is messy, when using different squares, I got slightly different results in a few extreme cases. The squares on the board aren't exactly equally sized!
So - I'd ditch the ruler and go with a graph.
That just leaves the problem of how to figure out interceptions...
Cheers
Martin