Short of going with a real designed fairing package, it’s a crap shoot. One just has to keep trying til you find what works for you. There’s just nothing like true wind control. Completely changes the ride. But you’ll not get it by adding just a windshield. Well highly unlikely with very subjective results. Without more than windshield all you can hope for is a functional compromise.
Try different combos and hopefully you’ll find something that works for you. Or learn to love the wind in your face and nothing to trip over off road or get bunged up in a nap scene.
If really bugs you, consider a different unit, ride an RT or even a Goldwing. I’ve ridden an RT in downpours and did not even get wet! All whist listening to radio….at 80mph awesome.