Hi. I'm currently in the process of experiementing with arrows.
With red arrows I'm having more success with counter attacks on.
I'm playing 4-5-1v with red arrows on DR, MC on the right and just AML. No blue arrows as the only thing I can see is its more of a stay back effect and I don't really want that on a counter. Anyway, all players with red arrows scored today, my DR scoring 2 so there must be some effect in going forward.
In the past, i played narrow diamond vs narrow diamond so I used man to man and blue arrows on DC, DC and DMC and it worked, 3-0 victory.