Yeah, I use them...can really give you an edge. I particularly like having my full backs go forward and overlap the wide midfielders...this was an awesome tactic on PES4 and just tonight I have scored a couple of cool diving headers on PES5 using full backs to cross. Not as easy to score at crosses as it used to be, so far at least. I also found it useful to check the individual defending ratings as some teams were retarded and had strikers playing high or medium defence and hanging about the halfway line or deeper...obviously detracting from scoring potential as they often didn't get forward enough. So, yeah, the individual tactics are something to pay attention to in my opinion.