I couldn't quite decide whether I should laugh at the plan or scream, because the sight of him hurling himself toward the house looked funny, but it did make me a little nervous. In the end I decided that the house was pretty foamy so he probably couldn't get hurt too much.
Once he had it figured out, there was no stopping him. It was climb, fling, jump, repeat for about half an hour.
There was no success with the helmet this time, but he did seem to be making some progress.