when was the first time luffy used rocket in one piece

Answer 1

Luffy first used the "Rocket" technique in "One Piece" during the Enies Lobby arc. Specifically, it was showcased in Chapter 427 of the manga and Episode 329 of the anime. This technique involved Luffy using his Gum-Gum powers to propel himself at high speed, often in combination with his stretching abilities, effectively launching himself at enemies or obstacles.