oh, what I forgot: The actual cracking. I usually need two charges into low strength fissures. I put a high yield charge in the first one, and then try to judge if I need a medium or high charge for the second one. Sometimes this goes wrong and I either need to disarm a charge, or use another one, occasionally the rock has no low strength fissures. But three charges is usually the max.
On my Krait I had 7 collectors (one 3C multi controller with 4 and one 5A controller with 3 limpets), and they usually hoover up the fragments faster than I can shoot the surface deposits. With only 3 or 4 limpets there might be some waiting for the limpets.
And lastly: Remember to fill your refinery, it's (in my case with a 2A refinery) 6 tonnes of free cargo space!
On my Krait I had 7 collectors (one 3C multi controller with 4 and one 5A controller with 3 limpets), and they usually hoover up the fragments faster than I can shoot the surface deposits. With only 3 or 4 limpets there might be some waiting for the limpets.
And lastly: Remember to fill your refinery, it's (in my case with a 2A refinery) 6 tonnes of free cargo space!