What the heck's a throw meter? Just kidding, of course, but seriously, I just set high rates at "all I can get" and low rates at about half that. I then dial in a generous amount of expo on BOTH rates just to be on the safe side. After the first flight, I start tweaking until I get it where I want it. I suppose if I REALLY wanted to measure the throw, I'd use a ruler or a protractor, as necessary.

Just my (somewhat primitive) thoughts.....

Erik