So, IWBs have been the rave since I started playing in FM 20 and the problem I always had with them is that all my full backs always had a hit to their role rating whenever they were playing IWB until I took over Leeds during my Journeyman save and I came across this guy, Stuart Dallas, who was the first one NOT to have this penalty. After looking at it a bit, I realized it's not necessarily the stats that determine the IWB role rating, it's the preferred foot. Opposite of the a typical winger/Wing Back which needs to have the same sided foot for crossing. The inverted Wing-Back needs to have the opposite sided foot while playing for cutting inside when the player has the ball. It's intuitive now I think about it, but I honestly had no idea and it pained my OCD for days.
Anyway, TL;DR For the IWB tactics, make sure to train your young IWB fullbacks to the side opposite of their preferred foot. I.E LB needs a right foot preference and RB needs a left foot preference. Hope this helps anyone that is trying to use the OP OP tactics from Tactics Testing.
Anyway, TL;DR For the IWB tactics, make sure to train your young IWB fullbacks to the side opposite of their preferred foot. I.E LB needs a right foot preference and RB needs a left foot preference. Hope this helps anyone that is trying to use the OP OP tactics from Tactics Testing.