Windshield mounting same as far as I know---Puig makes Touring Screen that kinda works. I have one
Stock screen with Laminar Lip bolted on, works, too.Using this method at present
On my 11th maxi scooter since 1990, over 400,000 miles----you are never going to get buffet free ride on modern maxi scooter----your nose is too far from trip of screen.
Vespas because of how close your nose is to tip of screen, can provide buffet free ride with right look over screen height.