Yes! That’s your ONLY solution because as with the SuperCup and other HZ planes they use push-on props, so the props can’t be flipped on the shaft.

As you've used the prop’s leading edge of your pusher prop with reversed rotation now becomes the trailing edge and the trailing edge of the prop is now the leading edge. Although, it doesn’t look much different on these thin plastic push-on props the efficiency of the prop is still reduced. A more dramatic comparison in reduced efficiency might be like Michael Phelps swimming with his hands reversed with thumbs now facing outward and little finger toward the inside of his body. His hands can still be cupped, but each swimming stroke is now less efficient.

These thin inexpensive plastic push-on props by HZ are overall(various flying patterns) the most efficient prop for using on the stock SuperCub setup. You could experiment with a little spinner and other more expensive props, but eventually realize that these inexpensive thin blade push-on props designed for the SuperCub and other HZ planes still give the best all around performance.

As far as which pitch should be called right-handed and which one left-handed depends on your perspective. From the perspective of the pilot in an IC CCW plane the prop is right-handed from his perspective sitting in the cabin behind the prop looking at its rotation in front of him. Well, you say, "Why then don't they refer to the engine as CW instead of CCW?" My guess is that originally you had someone stand in front of the plane to grab hold of the propeller and give it a spin to get the motor started. From that vantage point the prop is being spun CCW. However, seated in the plane the pilot sees the prop rotating right-handed or CW. From the perspective of a parkflyer standing in front of his model plane with a CW electric power plant the prop is rotating right-handed. All HZ pusher planes still use the motor wired for CW rotation. This CW pusher rationale is determined by viewing the prop's rotation from behind the model plane. In either case (electric puller CW or electric pusher CW) the pilot is viewing the prop's rotation when looking at the prop/motor with its shaft end being closet to him (puller viewed from in front of the plane and pusher viewed from behind the plane.)