The problem with a foot-loop is that your foot just swings under the boat, and leaves you lying flat on the water. The loop needs something to push against, or something to limit the swing, so your energy is directed upward. With no one on-board, the Wave is practically sitting on the surface of the water, and your body weight is practically all below the surface. You either need something stiff like a ladder, or a three-point harness, to step onto.

That's why I thought the righting line clipped to a bow eye would work, but I'm afraid that would shear off the bolts. Maybe a line hanging from the bridle shackle would be better to clip to; but what to do with it when not needed... I guess clip it to the bow eye, and then move it to the righting line; might need a knot in the righting line.