The easiest way to train in T11 is to let them keep playing. So when you have 4 youngsters playing same areas in the same team, none will grow to your expectations and its frustrating in my experience.

I started playing T11 with squad rotating system, but I noticed the more successful teams didn't do much changing. And in my first KOTH, 4 days into the event my KOTH squad could hardly win a game.
I didn't know why, but later I realised that my opponents whether active or not had 11 players that played day in and out. And their consistent playing made them better than my rotation squad quality wise. That's when I changed to the name of the game: Top Eleven.

Occasionally, I do have games where my best player like a 9* defender gets injured, and my main striker or midfielder red carded and am totally at a loss for subs. But that's just once or twice in a whole season of games.

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