I don't feel like making a new thread for this, but I finally figured out how to use mines aggressively. I side mount them on my Hwachafish. The hwacha breaks their engines and leaves target ship unable to evade, I can then close to appropriate mine range and start pumping out little bundles of grief until the hwacha reloads. The high mounted Goldfish helm give me a great view from which I can gauge the range and the ship is maneuverable enough that it isn't very hard to get into position, especially against a crippled opponent. Mines can also be used to discourage my victim's teamate from getting too close, especially if he wants to ram me off my prey.
For ammo I ask my crew to bring burst. Even if no mines go off from proximity fuse, the 6th mine will set detonate the 1st mine, and if the field is tight enough all mines will go off simultaneously. It is also great to watch one mine catch two ships in its blast radius.
The new patch has been out for weeks and I am probably not the first to figure out the new toy muse gave us, but I feel pretty proud of myself anyway.