One time I was charging a Spire in a pyra, I was certain I would get an easy kill, because the spire hand not done serious hull damage before I got inside his arming range. Suddenly boom half my ship's components are offline, the hull armor is down and the ship is swerving left at the enemy any more. Apparently the spire had dropped a mine in my path. And I spent the next 5 minutes going evasive and avoiding battle to get my ship repaired. Nothing turns the tables on an engagement like a mine hit, especially on overly aggressive Pyramidions.