When it starts getting that hot I look to put the mesh on. A little squirt here and there with tepid water on a t shirt with mesh over and I generally have some cooling for 45-60 minutes at a time.I've got a Pilot mesh jacket which is about as open as possible, but it gets awfully easy to take off over 90 deg. F.
Not into "man boobs" here Russ !Form fitted for man boobs! Nice!!