Problems with Wing Mining

Hello, I have some questions / problems with Wing Laser Mining.

Today my son and I mined ores together for the first time in the Anaconda. His ship is not engineered (https://s.orbis.zone/dfsw), mine is mostly (https://s.orbis.zone/dfst).

In principle it worked wonderfully, but suddenly his Anaconda was full (320 tons) while I was still at 200 tons.

We previously mined ores with ASP Explorer (son) and Python (Me). It was then clear that his Ship was full faster. He then bought the Python and mined until he also had an Anaconda.

We were in the wing and had our own meeting.

Why is it that his cargo hold was filled so much faster than mine today, or what did we do wrong?

  1. We only used one Prospector Limpet (A Rated) per asteroid. Should we both have sent our own on the same asteroid?

  2. Sometimes one of us, usually he, started lasering before the other was there. Is this a problem?

  3. I understand correctly that in wing laser mining the asteroid is "instantiated", and so the amount of mining is doubled. So if the asteroid has 20%, then with 2 people it is 40%. But for everyone it's 20%. So where does the difference come from?

Thank you for your answers!