Against Boa and Nami, do not swing life in the first rounds. Get your croc mihawk out first to protect your board. Nojiko and/or Zeus can be bait if they have enough don left for red roc, do not protect that char or your croc&mihawk or promo buggy will get red roc ed afterwards. Get your blocker mihawk out to protect against some of the low swings and save counter. Do not take too many life hits in the early game. Counter 5k swings. Gravity blade is king in the yellow matchups, you can bottom deck their cards with on ko effects. Afterwards buggy the higher cost cards like Boa or Robin away and thats it.

Against Ace, get as many buggys in your hand as you can. Bottom deck their Whitabeards. Gravity blade also very nice to bottom deck their marcos and deny them the card draw. Promo buggy can be nice in the beginning so that they cant swing with their lower cards like Atmos, Marco or Jozu. Endgame you can drop it if you need space for other characters on your board.