*NOTE*
I have tested these tactics in a few games to make sure it doesn't
crash and they work, but they're completely bare so you'll have to move
around the outfield players and set their tactics yourself. You may
even lose every game because you will be outnumbered in the outfield
drastically. This is just a fun tactic. */NOTE*
Okay after a bit of wheeling and dealing I managed to get the game to
allow me to play more than one keeper on the pitch. So I've uploaded
two tactics, one lets you select two keepers and one lets you use three
keepers. I suppose if people desperately wanted more keepers I could
make those tactics but I'm sure three is enough.

The above two images show that the game has allowed us to select two keepers.

The above two images show that we've been able to select three keepers,
and you can even see them on the pitch, so it works out well. For some
reason the assistant manager put Anderson in goal but no matter.
You can move any of the outfield players to any position (other than
more keepers of course), so that doesn't seem to mess with the tactic.
They're just in the default position so you can move them if you want.
You can't drag players into the extra keeper positions in the tactics
screen since they overlap; you'll have to do it in the players screen.
Tactics uploaded below. Good luck.
http://www.filefront.com/15402707/Pu...%202009%29.tac
http://www.filefront.com/15402709/Pu...%202009%29.tac