dragonflyrider: Do a barrel roll!
clockwise or counter-clockwise?
But more seriously,
MISSION 30 - BEARBAITING
Loadout - You need to set your ship loadout to Helios missiles.
Mission start: Call in for rearming (this will make rearming faster once you use your missiles). Set your missiles to dual fire mode. Call in reinforcements, they will help out with the fighters so you can concentrate on the beam weapons.
Target the Beam Turrets and fly in close; as was previously mentioned in the thread, you should only fire the missiles from close range. Two Helios missiles (if they hit their mark) will take out one beam weapon. Target the second.... then rearm yourself. While you are rearming, why not target a few flak cannons.
Repeat the above procedures until all beam weapons are out, or the ship jumps out.
If that doesn't work, follow Whitecroc's advise:
Whitecroc: I spent so many hours trying to get a "perfect" run of that mission. The sheer number of keys I would press whenever I restarted it... Link bombs, all power to thrusters, tell wingmen to engage, maximize acceleration and afterburners, call for backup, call for ammo before I'd even fired a shot... And then it turned out that the mission was linked with the next one. If you failed to take out anything in the first mission you would get another shot at it in the next, assuming it didn't take out the other ship you were supposed to be protecting first. I didn't actually have anything to do on that mission, so I just watched the battle and took out some of the anti-fighter beam turrets, or whatever they're called.
Good luck!