I used this guide by I Got A Wooden Spoon on youtube:
Most of the shots worked fairly consistently. Some notes:
-the first shot of hole 13 always ended up getting pulled into the second black hole, then thrown out of bounds. I suggest going around the outside initially instead of through the center.
-water jumping in hole 16 sucked for me. I couldn't get the jumps to work consistently as I wanted.
-you have to go fast in hole 17 otherwise you will run out of time.