Things I have learned today

1. The child trailer for my bike can carry over 300 lbs, despite the shitty wheels that sometimes let the tire fall off the rim (but not today!), as long as I balance the weight over the axle and don't let the hitch take all the strain.

2. However, 300 lbs is about the limit of what I can haul up the hills around here, at least without better gear ratios on my bike (although again, better wheels on the trailer would reduce rolling resistance).

3. Concrete blocks are surprisingly heavy.