How about just using a carry-all to dump them on the rocky surface where the enemy's base is built and then let it slowly destroy anything in it's path....
I saw the Devastator has changed quite a bit. Is it me, or is it now some 'Mech type thing. If you look at the movie, you'll see in the part before the worm part that it lifts it's leg. (or something like a leg) comments?