Can Luffy Use Observation Haki -

He uses it to find the strongest opponent on the battlefield (sensing Kaido’s monstrous presence). He uses it to protect his crew (feeling when Tama is in danger). He uses it to time his most devastating attacks.

Luffy is the literal opposite. He is a hurricane of emotion. He fights with joy, rage, and impulsive chaos. In Gear 5, he laughs so hard he forgets to dodge. can luffy use observation haki

But he will never, ever use it to avoid a punch that he knows he can survive. Because that’s boring. And for the man who will become the Pirate King, a boring fight is worse than a lost one. He uses it to find the strongest opponent

His formal awakening came during the brutal two-year training on Rusukaina with Silvers Rayleigh. By the time he returned to the Sabaody Archipelago, he was a certified user. We saw it explicitly when he dodged the Pacifista’s lasers with a calm smile, and again when he sensed the presence of 100,000 Fishman pirates on Gyojin Island. Luffy is the literal opposite