In Pawnee I like those big rectangular truck mirror (with 3 point
extra stay mount) in close to fuse just forward of window. Don't worry
about the drag!!! I agree window open (exercise your neck) for take
up slack and LOOK. I have done tens of thousands of tows in Pawnee and
can remember doing all 83 tows in a day and on another day 78 - you
could not do that in many other tow planes without being buggered at
the end of the day.
Ian McPhee
Australia