Thought I'd update this post with a photo of how I rigged mine. I didn't want any fasteners through the hull (my brand new transom!) that would be below the waterline, so I affixed the step to a piece of 5/8" thick King Starboard, a piece salvaged from an old swim platform. Then I just added the plastic to the hull with 4 bolts.
The other black thermo-plastic step you see was added to where the bolts go through into the splashwell area.
Between those 2-steps/hand holds, plus the built-in handle on the starboard side gunnel cap ... and I can get myself back into the boat from deep water ... if needed.