Personally I split the fleet ages ago. Some cargo ships are doing long haul missions to other galaxies, others are barely going out of the solar system. It means that I have a constant stream of raided resources (well... just about) and every now and then I get a nice huge present 
I've found a few close to 60k of resources, but I've raided them all so their running a bit low

I've found a few close to 60k of resources, but I've raided them all so their running a bit low
