rteesdale---I know your cycling time is most likely your "get away from it all" private/personal time, but... If you got one of those Burley child trailers and tried towing one of your little ones around on a local "Rails to Trails" path, you might find yourself in for the workout of the month. Get hubby towing the other one in another trailer behind his bike and you could get into day-long mini-tours that the hill-climbing heroes might well have trouble handling. Concerns about gear ratios, cadence, heart rate, wattage output, chasing/attacking/hammering/dropping and all the rest of that stuff would likely become a rapidly fading memory and you'd be into simply enjoying a family weekend ride.