I think this is the first time we've ever had four people in the bucket. Playdates are easy with the Madsen because you don't have to worry about carseat swapping; just bring your helmet! There was much laughter and potty jokes coming from under the rain cover on the ride to our house...ah, kids.
We've kept the rain cover on pretty much every day since we made it. It hasn't seen much rain, but works great when it does.
Bike'n'trike derbys on the patio are becoming part of the daily routine, rain or shine. I memorialized the occasion with a chalk drawing. Long live the Bucket Bike!