[Hugh Manatee]

I thought the point of mines was to set a "boobytrap" for your enemy, then leave it for them to find. Mines in real time are kinda dumb and ineficient, if the enemy sees you drop a minefield then whas the point?

On another note you could try Drones, they are suicidal fire and forget units that are dropped and chase the enemy around, not entirely unlike mines, just they move(can units cloak? cloaked drones sond fun, you couldn't use the cloak in combat but it would be a fun surprise in the system).