IMO, there are several aspects needed to make this a successful exercise:
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The set-up: the elevated foot is often too high, e.g. on a standard bench. You want it about half that height. Similarly, foot comfort. I found getting my foot in a comfortable position, where it didn’t become a distraction, a challenge, until I started using the padded leg extension on my bench as the support for the top of the foot/ankle.
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This is a movement that requires a bit more mental discipline (lunges are in the same stable). You need to work on good mind muscle connection; fire through the heel and feel the glutes working. Aim for constant tension and control the eccentric portion of the rep.
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I really feel these when I do them as muscle rounds, which means 6x4 with 10s between each mini (cluster) set. This works well for unilateral exercises: 4 reps on left leg; no rest, then 4 on right leg, no rest. Repeat for total of 6 sets each leg.
Regardless of your rep scheme, I would recommend resting between legs. Despite best efforts, the ‘resting’ leg is not actually resting.
I would also consider you try depth lunges using similar guidelines. Here you elevate both feet on shallow platforms (I use a couple of breeze blocks but 2 plates could also work).