Agreed....but I ve compared my angles to the many sailboats on the lake...so I'll have some sort of clue. If I can point as high as a 35 Beneteau or Hunter I'll get a reasonable idea. ( which has not really been attainable for those really pinching) . Speed-wize on a beam reach or lower I can easily keep up if not faster...being on a plane. I've sailed for a bit now too.How will you know that you are sailing closer to the wind? A few degrees difference will be hard to judge when you are by yourself.
You need a reasonably skilled partner for that...
Carry on Obi-Wan!Btw I'm now streaching it out to 50 inches!
Of course the middle is flat.....need to make a foil shaped trunk!!