* Initial research, note taking and rough draft in the first 1 to 3 days after paper is assigned. Try to hit page count at this time. Topic will be "fresh".
* Start final draft 2 or 3 days before it's due.
This consistently worked for me throughout college. By "days" I mean 2 to 4 hours of work for each day.
.... I was able to use Winnie the Pooh as a motivation for success in college (similar and much more thoroughly elaborated in "the tao of pooh" by Benjamin Hoff, great read)
Spent more time in a university library my senior year of high school than I did in my entirety of college.