The way i give my players SA, is give em a couple test matches. Watch the commentary, and see what they are doing.

From there i go with what they are doing, Defender heading alot = Airal. Defender stoping shots = wall. Midfielder assisting = playmaker. Midfielder dribbling alot = dribbler.

A either footed midfielder or defender get corner taker, a either footed midfielder or striker get free kick taker. Give them that job in the test matches and watch how it goes.

I prolly do some wrong picks, but been ok so far. (even if my playmakers usually suck at raitings, but as long as i win its ok )