4-5-1 v is a balanced one, so no arrows needed except one on your striker to ensure he has more one on one chances and always up front, in case ya lossing, red on your wide player (turn to flank attack and whole pitch), other wise, mixed style, own half, normal or defende with counter attack, if playing attacking remove the counter one. Againts stronger or equal 3-4-3, ya better play with normal, mixed, own half with counter, red arrow on st only.