Any other suggestions to improve the 800 GSA screen, I love the bike but after 600 miles from new i'm ready to change it. The wind turbulence and noise are unbearable, I tried the Puig as described above and its no better, probably worse in fact. I'm 6'2 and even lying on the tank and tucked in behind the screen with,the standard or puig the blast and turbulence is still there; this makes me think its coming from below not over the top so cannot see the clip on extensions working either. It really is becoming a showstopper for me, even with ear plugs the wind noise is deafening. I have done a lot of googling on this and it seems to be a common complaint, but I really do not want to shell out more money on other screens as no one seems to have found a solution that works, some have managed to reduce it but no one seems to have eliminated it. I really do not want to have to get rid of the bike as I will lose a fortune but it looks like I will be driven to it, as its practically unrideable. I have two other naked bikes and the there is next to no wind noise and no turbulence when compared to the GSA, so there must be a major design flaw here.
OK, this is a bit long, but it's a matter I've wrestled with for two decades. I feel your pain and hate the idea of having to part with a bike I otherwise love just because the screen is so damn noisy.
Noise & buffeting is a really common issue with adventure bikes and their barn-door aerodynamics which is why the aftermarket screen business is so busy for this type of bike.
The noise comes from disturbed airflow around the edges of the screen, and partial vacuum cavitation directly behind it, which is why even ducking right behind the screen is still hideously noisy. You may have noticed that some OEM adv bike screens such as the new Triumph Tiger 800, and Honda CB500X now feature slots at the base of the screen, in an attempt to reduce the vacuum formation at the trailing edge of the screen.
On naked bikes, the airflow isn't obstructed, and so is smooth, consistent and quiet. Sportsbikes have teardrop aeros that don't baulk the airflow, and tourers just have a huge screen that moves all the unpleasantness above head level.
So, a couple of suggestions. First, (and if you haven't already) try taking the screen off and going for a ride. That might sound facetious, but it has the advantage of being no-cost, and will also let you know how much wind noise (if any) is being generated by mirrors & bodywork. You might also be surprised how much wind protection you get from the clocks & bodywork around the tank of an adv bike with its 'sit-in' riding posture (at least up to legal speeds). It might seem daft to ride an adv bike like a naked, but even without a screen, adv bikes are decent for all-day distances thanks to roomy cockpits, relaxed rider triangle, and luggage carrying options.
By the same token, the counterintuitive option of using a small sport- or flyscreen may be worth considering. Titchy screens leave your head (and the ears attached to it) in clean airflow, but still take more pressure off your chest than no screen at all. You could maybe test out an F700GS (or the new F750, when it arrives) and see if a tiny screen is an acceptable option.
I'm also a bit of a Givi Airflow screen fanboy, having fitted them to my 1200GS (brilliant) and KTM 1050 (not perfect, but much better than OEM) The 2 piece Airflow screens have several advantages: they're reasonably priced, have a wide range of height adjustment, and have a large horizontal slot between the two screen sections, which helps equalise the pressure between the leading (high pressure) and trailing (low pressure) faces of the screen, and also produces an upward-moving jet of laminar air flow (hence the name) which deflects the air coming over the top of the screen upwards. This latter feature means that you don't need to raise the screen so high that it gets in your sightline.
However, the Givi Airflow (IMO) has one major downside, which is that it's pretty ummm....let's say, aesthetically challenging, and the smaller the bike, the worse they look. It's kind of like getting a Panigale and fitting it with a 2-helmet topbox, tasselled leather cruiser panniers, & tartan handlebar muffs.