From there, their arguments were more focused on whose idea would make it into the final design. We encouraged them to look at YouTube for ideas, and they eventually came to a consensus. At that point the screaming (mostly from Rowen) was due to who got to set up what. Finally they got a working course up ... effectively blocking me from going downstairs, but wisely not obstructing my path from my office to the upstairs bathroom.
Janelle did not get home until much later than expected (having worked a 12 hour shift at the store), so we had to wait a little while for her to get home so the boys could run the course. Despite all of the consternation, I think they overall had a good time.