Sweep your arms down like a freestyle stroke and torch your lats.
Keep your arms nearly straight the whole way, this is a sweep, not a row.
The swimmer pull is a straight-arm sweep, the handles travelling in a wide arc from overhead down to your hips, which keeps the elbows out of the equation and points the entire load at the lats. The biceps assist only as stabilisers along the near-straight arm while the back muscles pull your bodyweight through the stroke and control the long return to the stretch. It earns its place as the suspension answer to a straight-arm pulldown, isolating the lats through their fullest arc using nothing but lean and bodyweight.
The elbows. A row bends them and drives them back, the swimmer pull keeps the arms long and sweeps the handles down to the hips, per the cue, which takes the arms out and makes the lats do the moving.
Down the sides of your back, especially as the handles pass your ribs and squeeze in at the hips. Feeling it mostly in your arms means your elbows are bending and it has quietly become a row.
Walk your feet toward the anchor to lean further back. The straight-arm position gives your lats terrible leverage, so small angle changes make big differences, adjust cautiously.
