One tactic I remembered reading about here was a player sending multiple waves of single ship TFs, each composed of minor units such as PCs or PGs, against a defending surface TF. The sacrificial lambs would obviously be blown out of the water, but each engagement would also drain the defending TF of ammo. The attacking player would then follow up with a fully loaded TF composed of BBs, CA, and escorts to overwhelm the defender.
"splendid was their tactic of diving upon our force from the direction of the sun, taking advantage of intermittent clouds"
-Captain Takahisa Amagai, KAGA, June 4th 1942