well, we haven't gone on really long rides with this setup -- mostly just around town. We also have a double trail a bike, which keeps 'em moving so as not to fall asleep. I believe the days of pulling the trailer with napping kids is over for me sadly. During our vacation in Amsterdam last summer, the kids passed out big time in the bakfiets cargo area. it was delightful, but there's no way we're getting one of those here...