Originally Posted by Mister Earl

For those having trouble above:

Level 8: I used a long, big box to connect the two flags, with triangles at each end so the ball couldn't roll off. Another long box above the final flag, with two smaller boxes bolted on to hug the square the flag is on, so the whole assembly doesn't move. After you get the top two flags, delete the box above with A to have it drop towards the flab below.