My most successful 4 ship scum lists have 4-LOM and Old Teroch, plus two. Seevor or Unkar, and usually Torani, BSA, or Quin Jast(as a terror threat with adv proton torp, to herd mostly... mostly). I've also flown it with Seevor and Unkar, replacing Old Teroch with Fenn Rau. There's a few other combinations I use too, I have 8 versions of the list stored, and have run 4 of them, and won all 4 games against a couple of local veterans testing lists for tournament, so it does well.
Example:
Old Teroch (56)
Crack Shot (1)
Ship total: 57 Half Points: 29 Threshold: 2
4-LOM (49)
Crack Shot (1)
Advanced Sensors (10)
Mist Hunter (2)
Ship total: 62 Half Points: 31 Threshold: 5
Captain Seevor (30)
Ship total: 30 Half Points: 15 Threshold: 2
Torani Kulda (48)
Swarm Tactics (3)
Ship total: 51 Half Points: 26 Threshold: 5
Total: 200
I use Old Teroch to aggressively flank, 4-LOM, Seevor and Torani take control of the center, swarm tactics is there to have Seevor strip tokens before Torani shoots in case I can line up the bullseye and Old Teroch isn't in position. The list thrives on having many threats that my opponent wants to avoid, making it difficult to fly against. 4-LOM gets up in their face to hand out stress, Torani has the dangerous bullseye, and Old Teroch goes for isolated targets. Seevor strips tokens to improve Torani/4-LOM damage output.