As you said, in a later post, Rooney was arguably the best No.9 in 2009-10 but he was dreadful in the role during the WC and the first half of that season when contracts and granny shagging reared their ugly heads. Berbatov outperformed him in the role and Chicharito burst through plus Rooney was sensational in the deeper role. That decision was made for SAF by the situation then and it actually worked.
He didn't play as the lone striker at the World Cup. He payed as the No.10 behind Heskey or Defoe.
Nor did he really play there first half of 10-11 what with everything that went on.
So not sure where you got him being terrible in that role from.
Did dropping him further back work? To me playing Hernandez and reverting back to a 442 (or 4411) was the beginning of the end of Fergie's great period.
Rooney of 09-10 was vastly superior to Hernandez. So that swap alone made no sense. Fergie started to drop Hernandez not long after.Then too keep Rooney in the team we changed from a 433 (451) back to a 442. The football got worse and worse from there on in.
You have a guy at the very top of his game, at his peak, why mess with his position? I've been very critical of Rooney in this thread so I'm not blindly defending him but that just shouldn't have happened.