Lure a Puyo close to the sand to use for a Sand Grapple Boost. As it is close to entering the sand, land on the sand and crouch. Very quickly after crouching shoot the grapple and jump. As soon as the Puyo is killed aim down to escape the sand. If the timings don't work out just right, too much height is lost to the sand. Crouching in sand is also a high softlock risk.