Velocomp Powepod with a trailer?
I've been looking at them for a while. The price is right and I like that I can switch between my gravel and road bike. For my purposes, the accuracy seems fine.
However, I'd estimate that 30-40% of my time riding is spent hauling kids in a Burley. It's a great workout and I don't need a sitter.
This thing works on accelerometers, wind speed, and an Ant+ connection to your speedometer. Would it figure out that I've got 50lbs behind me or would it just think I'm extra weak that day?
I guess I could just track power on trailer days and power without and just not compare the two. I'd sure love to see real numbers up some of the hills with my kids though.