going by the Beaufort Scale you can not feel a 3mph wind, but smoke will drift,
and going by chairgun a 3mph wind will blow a pellet of course by 20mm at 40yds.
perhaps the best way to judge if smoking has helped is to ban smoking anywhere on the course for a full season and then compare the results from this year.
Success is the ability to go from one failure to another with no loss of enthusiasm.
Sir, Winston Churchill