Man, I just played the Crystalline Entity mission for over an hour, and got nowhere. People kept ignoring the damned way to beat the thing. Eventually everyone gave up.
I hate that mission.
I recommend not even trying unless you're going in with your fleetmates. It takes cooperation to beat.
I'm with a fleet, but mostly so I can deposit/withdraw from the fleet bank.
Maybe I should join the TrekBBS fleet?