Recently my friend made this airplane up and it flew so well that I just had to share it with everyone. He used different techniques than I do. Somehow his flies better than the ones I make. I think this happens in the steps where you make the waterbomb base (the triangle). He doesn't fold back like I show. Instead he just pulls the paper together into the base, then creases it.
Step 4: Fold 3
Then unfold and flip over.
Step 6: Waterbomb Base
Step 8: Fold 6
Then unfold to form the triangle again.
Step 11: Fold 9
The second picture shows a close-up on the pocket that has been made for the next step.