Outstanding! Don't know if I would feel comfortable draggin' the knee either, but you make it look extremely in that photo.
I got my stock suspension setup tighter than factory default and that helped better speeds at the track and more confidence cornering. The busa seems much wider than all those 600's and 1000's there that day - they have plenty of lean angle for a track. I wish I had better pics of my experience on the track but we were both too busy riding to take pics! My friend, who had never track ridden before described his first expereince as "A roller coaster feeling" which is a great way to put it...even thought this track is completely level/flat.
Now for my standard PSA: Track riding is SO MUCH SAFER than tearing up the streets and public roads, and is about 10 times more fun, and you learn 10 times as fast. $200 +/- SEEMS pricey at first, but after you get out there and realise you have only been using about 1/3 of your cycling investment, it doesn't seem like much cost at all/
nuther very bad knee dragging pic from video