take a rotator put it 4-5 blocks above the boat put rotator ontop of it put 1 block on the rotator put a t1000 engine on the block facing backwards turn on reverse rotation invert rotation on the rotator, and set range from 90* to 30*
take a rotator put it 4-5 blocks above the boat put rotator ontop of it put 1 block on the rotator put a t1000 engine on the block facing backwards turn on reverse rotation invert rotation on the rotator, and set range from 90* to 30*