And that's not just from being a purist and pushing for flying skills instead of mixes. It's also about the very real issue that in various wind the amount of rudder correction needed differs, and the matter of landings where you may need to use a little aileron to level your wings but don't need any rudder. It's not like coordinating turns is that hard anyway. You push the left stick a little bit in the same direction you push the right stick. If that really is a challenge for you then seriously, you're not ready for a P-40.