if you have a stron grip, your cupping and cocking is a compeltey different motion (that is why i prefer a neural grip) if your grip is strong, from adress, to move your club strair up you would be cupping the right wrist and bending the left wrist up. with neutral to move the club up and down you just cok and uncock wrists. and with strong drip your left hand cupping motion is now the cocking. i could be wrong, i don't really konw too much about strong grips, that is just what it seems to me

so i am not sure how to get a flat wrist up top exept to have a neutral grip.