Here are some links on P-Factor:

* [link]http://home.earthlink.net/~x-plane/FAQ-Theory-PFactor.html[/link]
* [link]http://www.djaerotech.com/dj_askjd/dj_questions/propeffects.html[/link]
* [link]http://www.qmfc.org/school/yaw.htm[/link]

Some quotes from those links:

"This is one of the reasons why most real prop planes need a certain amount of right rudder to keep them straight during takeoff and climbout."

"rudder is typically required on takeoff and climb in most airplanes"

So again, using the rudder is the key to success. With proper technique, a plane with toe-out wheels, no right thrust, or wheel axles in front of the wing leading edge, can be taken off straight down the runway.