Paranoia tells me to push it to the floor. I know people who get clutch stops and the like to help get a shorter amount of travel though. But without something physical in the way (either a clutch stop or the floor), you could always guess wrong and you'll be shifting when you haven't completely disengaged the clutch, meaning either something bad will happen immediately, or your clutch life will be greatly shortened if you do it repeatedly (even if it's not noticeable).