The country held some great mule deer, but access was tricky. Miles of pancake-flat prairie separated me from cedar-sprinkled hillsides and endless acres of steep, rocky canyons. Overnight camping wasn't allowed, and I knew I needed an edge — a way to cover the open ground quickly and be back in the muley money before dawn's first glow. I didn't find my edge that first year, but when I came back to the area for the second time, a powerful e-bike was latched down firmly in my...