Oh sure I supose the 31" S- METER really proves the accuracy of the
test better than using Smith charts LOL.

How do you calculate antenna gain with a smith chart?

How about a polar plot then. Or do you think a 31" S-METER is the
definitive measurement? LOLLOLOLOL

The definitive measurement is the one that goes directly to the
source.

A S-meter is gets closer to the source than any polar plot.