As you know this level takes a bunch of time to complete which you don't want if you are doing a speed run. So I discovered this way to win the level with only the first rocket! which is going to save you a couple of seconds for your run.

Simply just try to send it through the "laser" on the right and make sure it won't hit the block down there, if you was expecting it to hit you can simply do a tiny adjustment to the rocket and it'll go on it's way.

Hope You Like it :)