Well I have a tall screen on the 06 classic I got off
@Ishrub a while ago as well as the fly screen.
I couldn't understand why some folk get sore after a days ride that was until I decided to remove the screen one time and at 75 mph I could understand why.
I can ride all day with either screen and not get sore or feel like I'm going to get pushed off the bike backwards.
But the wind noise from the fly screen is horrendous and not enjoyable so have the tall screen on all the time.