Corvettes or Q-ships (Totally Merchant Ships, Don't Worry About It) fitted with fake transponders is a thing you can try!
You're probably not going to be able to fake the drive signature of Like A Kjbillion Capships, but you could fake Like A Kjbillion Mecha or Missiles.
You would have to commit a fair amount of your reserves to this, which means you're up a creek if it fails, but the losses inflicted are potentially devastating. It also helps that this is a plan reliant on mostly frigates, corvettes, and artillery ships rather than on huger and irreplacable ships. High risk, high reward.
Re: Week 1/week 2 + questions
You're probably not going to be able to fake the drive signature of Like A Kjbillion Capships, but you could fake Like A Kjbillion Mecha or Missiles.
You would have to commit a fair amount of your reserves to this, which means you're up a creek if it fails, but the losses inflicted are potentially devastating. It also helps that this is a plan reliant on mostly frigates, corvettes, and artillery ships rather than on huger and irreplacable ships. High risk, high reward.