Fly Speed (assuming no strong wind from any direction) is as above, 17
k/mh or thereabouts. However, as is well known, they will hang onto your
back whilst moving and then swarm as soon as you slow down or stop.
Short of spraying your shirt and knicks with Aerogard I don't see
there's much you can do about it.
Cheers,
Ray
Yes, 17kph seems to be the figure. I recall reading once that at the
CSIRO Baseline Air Testing station at Cape Grim on the very NW tip of
Tassie that they don't have any flies because the winds average over
17kph from the west(there's a lot of ocean to the west)and the flies get
blown away. No doubt someone can confirm this or otherwise.
Halcyon