I like to beat their butts off by luring one or two carriers further away from the others and smush them into bits with the mighty onas-PG.
Or another nice way: just fly around them so they launch all their fighters and then fly through the stream of asteroids to blow the carriers up and after that, just shoot the fighters one by one (DOGFIGHT bit unfair though).
I once managed to shoot about 30 percent of the gateship´s shields with flyby tactics, though it took me about an hour and after that the GS destroyed my modified HC.
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Strange just a moment ago I was flying through a dense asteroid field but now I feel quite cold And just what happened to my
H-Cruiser?!?