[@RyoRyoRyoken][@LokiLeo789] I'm thinking surfaces in an area around him become very elastic and bouncy at his command. Opponents get thrown off balance by the sudden trampoline underneath them, Luffy gets a massive maneuverability boost by bouncing all over the place, and he could probably also double up the force of his attacks by charging them into a hyper-stretched wall or whatever before firing.