How much of a difference to fairings really make an on SV? I mean, I understand there would be a difference at Road America with two long straights, but for other tracks, it seems like it might not be worth it...
Obviously you'd have to rig up a catch pan, to be legal for tech inspection, but the bike itself isn't what's causing drag. As someone phrased it to me, "naked motorcycles are still pretty aerodynamic - it's the lumpy fleshy thing on top that causes drag."
I'd just rig up the nose section of a fairing/wind screen and then zip-tie a belly pan in place. But i'm cheap, and I get a certain amount of joy from watching bikes that cost $1200 finish ahead of bikes with $1200 paint-jobs.