[Skanker]

Timewise... not really. I mean, you COULD try to scoop ALL (or some) of the balls out and move them to a goal strategically advantageous to you. Most likely, you would be moving small amounts at a time (like one or two or three). This could possibly require more than one trip, wheras swapping the goals is just one round trip... even if they are ungodly heavy.

THEN AGAIN, you could use your special ability to 'fine tune' the score so you would win by a smaller margin <-- this would be much more efficient (and faster) than moving goals around.

Think about time. you have only two minutes to complete your tasks. zipping across the field 5 times and pausing for ball loading at each stop takes muck longer than going at a medium speed and grabbing one goal and pulling (or pushing) it around