"Have to think on that some more".
(To the sounds of us other 800 drivers clapping in unison, on time, together, as a team...)

Came across this, not sure if it will fit the ZFORCE 800. Its called a "Dust Stopper Rear Mesh".

http://storeatv.com/details/cote_a_cote/217/13226/dust-stopper-rear-mesh.html

Dust Stopper Rear Mesh Heavy Duty rear mesh enclosure helps to prevent dust ans debris from entering into the cab area while summer riding! Still allowing for fresh air to enter cab. Mesh is small enough to stop dust still allows for a safe clear view when looking through. Fits snug and tight with our new quick strap design!
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Brand: CanadaWindshield.com
Part number :: CW2891-PZ80F
$129.99 $116.99





 

That's a really great idea, and again a pretty simple DIY project.

So it's basically a huge dust filter? Interesting...