There is a rumor that it rains in Northern California in the winter, and we actually witnessed the rain last week. On that day, we decided it was time to make the rain cover we have been talking about forever.
It turns out that a rolling cart I had in the garage from The Container Store was nearly the same size as the Hooptie.
I took the wheels and middle racks off, flipped over the upper rack, zip tied it onto the hooptie, and we were in business.
I happened to have a small bit of the same fabric left that I made the cushions and side bag out of (an Amy Butler Laminated Cotton), so I laid it on top and hand stitched it on.
The boys liked it. Then my taller boy said it was a bit short with his helmet on, so he wedged the cart frame up, and added more zip ties. I am thinking of buying a clear vinyl and making roll-up sides and front and back to protect them more from the weather.