Do you pull the clutch when changing up? Fully? A little? Or not at all?

I always pull in the clutch lever fully, or at most 1/2 way. You can up-shift without the clutch on most bikes, to do it properly it's all about timing. You loose off the throttle as usual, but dont pull in the clutch lever, then you shift up. I'd always use the clutch lever shifting down though.

It's supposedly a little quicker clutch-less shifting, but I dont think it would make much of a difference unless you're in a race such as at a track.

I use rekluse in my dirt bike so I don't clutch. My sons quad I tell him to clutch during launch and up shift. Down shift don't worry. Now some people only clutch to launch. So really it's up to you. I'm thinking of putting an air shift on my Harley. Not any time soon, but kicking around the idea.

Edit. Street bike full clutch all the time, up or down.

Sometimes not on the up-shift (but usually) and always on the downshift unless accidentally tapping it.

Added- Have to agree with 'firestormer', at the track it's balls to the walls. Thought we were street riding.

About 95% of the time on the road bike. Never on the track bike

respect your gearbox and use the potential,to drive.

if you time tings correctly you should not need cluch