Wether a left footed ST or MC plays better on the left or right, no one really knows if it really makes a difference, but like Skidz says, you need to TRY EVERYTHING to help get the player his form. I've done it. 80% of the time my right-footed MC plays better on the left side. I don't know why. I just go with the flow.

As for right footed ML/AML or vice versa, they are not a terrible investment. It simply means they'll cut in more and score haha well at least for my AML & my friend's. We prob have two of the best AML in the league atm, and they are right footed.