Failure will bring future success

Sometimes you have a plan and it fails miserably. This morning I loaded a cart with sandbags, kettlebells , and other heavy objects, over 320 pounds. I thought the weight would have enough resistance to challenge the person pulling it. Unfortunately, it was only challenging pulling uphill. Not a total failure, the cart held the weight it advertised as its capacity.
We ventured around the carpool path stopping for three exercises. Bent-over rows, curls, shoulder press, Simbas, flutters with press, over shoulder toss, man-makers are some of the exercises we did this morning.
I will retry this cart at a future Q and get it right.