Rodger,
Assuming you have a laptop and webcam available this tool is great as it calculates the amount of adjustment required for ALT and AZ and provided a screen to let you make the adjustments with precision. I use it to polar align my mount each use as I do not have a permanent setup - and gets me close enough for 5 mins exps without field rotation at f9 with a Canon 20d in about 20-30mins. I could never quite figure the drift method - this tool is visual so using it is quite easy - takes a couple of goes to get familiar with it....
http://wcs.ruthner.at/index-en.htm