You have all seen my low screen / Madstad on my 650 , I am tended to that size screen . Mostly for the quiet ( Fecked left ear , as Sir Trev said , nekked bikes ARE the quietest ) and screens tall enough to cover my 6 foot 4 seem to make fast turn in harder

But Micks post is echoing the one mod that made the most difference for me , ie my gear not the bike

Quiet well fitting helmet , silk balaclava worn all year round , like "wicking" base layers keeps you cool too , though a helmet with good venting is key , especially when using the below .
Then a wind jammer pro
https://www.proline-sports.co.uk/acatalog/pro-tour-windjammer/And finally a long scarf wrapped round that , blessed quiet ...relatively.
Oh ....and good leathers rather than textiles ( I have both , but keep the textiles for the CRF , as it is SLOW

)....the lack of " flap " at speed is definitely a thing with noise and buffetry , It is most apparent when putting wet gear over the leathers ...who turned up the volume...

Ho Hum