Finally: What I've been fantasizing of! and at last I accomplished what I've been wanting to do for years! I never realized it, but the missing element was e-assist. With an electric motor on the bike; now it's possible to do the heavy hauling work..

From the top: Big EZE hooked up to the big cart and loaded with tree care tools. Pictures of various loads to be hauled to a compost pile at the back of the property. Last picture contrasting my cart and a pickup truck; loaded with the same tools.