one average bad match is enough to push him down
am not sure about when to apply, but i often apply them to my STs once hit 90% otherwise they will miss chances alot
otherwise i only apply them when they become less than 80% ..
I apply them too in big matches for even 90% players bcz you never know , one mistake or good pass or goal could be the difference
my team @ http://forum.topeleven.com/team-show...ears-fc-2.html
League : winner (S1, S2, S3, S6, S7) , runner up (S4*, S5*) * was in holiday away
CL: Winner (S4, S7), runner up (S2, S3, S5, S6)
Cup: Winner (S3)