These will challenge you more than any dumbbell row. You'll be essentially rowing your bodyweight with one arm.
Don't let your shoulder shrug up, keep your core braced, and pull with control. You'll feel your core work double-time to stabilize the offset load. Your pulling muscles will also contract deeply. To make it easier, simply go flat footed or adjust your angle.
Many lifters and coaches grasp the big picture when they read about the movements I prescribe for strength development, but they often miss the finer points. I've written this "Toolbox" series to help these experienced lifters fill in the blanks. It'll also help newer lifters learn about some very effective exercises.