The finish in the boat: layback of 15 to 35 degrees, forearms level with the water, extraction by lowering the forearms. Mistakes, back protection and what studies say.
The honest answer up front: the finish is the end of the drive: the hands pull toward the shoulder joint, the forearms are level with the water, you have a slight layback of about 15 to 35 degrees, and the blade is then extracted cleanly. Reinhart Grahn of the German Rowing Federation (DRV) names the layback angle of 15 to 35 degrees (measured from vertical) and level forearms as features of the back turnaround [2]. In plain words: you lean back a bit, but you do not tip away.
How much layback is too much? Grahn counts rowing with no layback (0 to 5 degrees) or a lot of layback (over 45 degrees) as a mistake. Without layback, a strong finish from the shoulder area is not possible. With very large layback the center of mass shifts toward the bow, the boat pitches slightly, and the abdominal muscles use energy that is not available for propulsion [2]. The model itself names conscious shoulder and arm work on the circular path around the oarlock and straight wrists and elbows at the same height, parallel to the water surface [1]. The model is a guide; body size and build can justify deviations.
A distinction: this guide describes rowing in the boat. On the ergometer there is no blade to extract. The finish in the boat is therefore also a balance moment.
How hard is it? You understand the position in one session. Until layback, forearms and extraction all sit together, you need many outings, in experience terms.
Toward the end of the drive you take the upper body back slightly. The DRV gives a layback between 15 and 35 degrees for the back turnaround [2]. Milestone: your coach sees on video that the angle stays about the same in every stroke.
In the finish the hands pull toward the shoulder joint [2]. The pull direction in the shoulder is horizontal, the hand describes a circular path around the oarlock [1]. Elbow and wrist stay at the same height, parallel to the water surface [1].
In the very last part of the drive the back stays firm. The argument: in the last centimeters hardly any propulsion can be generated, and further layback leads to pitching and strain on the abdominal muscles [3].
Extraction happens vertically by lowering the forearms at the elbow joint. The blade comes completely out of the water in one movement [1]. The finish ends in front of the upper body, without pulling the forearms past it [1]. British technique descriptions give as a picture that the blades stay square as long as possible and the hands go down and away [5]. Milestone: 10 strokes where the blade is out without touching the water.
Feathering happens through a slight tilt of the wrist, which is straightened again in the recovery [1]. The upper body is fixed during extraction and makes no vertical movement [1].
Film your finish from the side and hold the picture before the blade is extracted. Do you see that the forearms are roughly level with the water and the layback is similar in every stroke? Then you have it. Also count 10 strokes: how often does extraction work without touching the water? You bring that number down week by week.
The DRV gives a layback between 15 and 35 degrees, measured from vertical [2]. No layback or more than 45 degrees counts as a mistake [2].
Toward the shoulder joint, on a circular path around the oarlock, with elbow and wrist at the same height parallel to the water [1][2].
By lowering the forearms at the elbow joint so the blade comes completely out of the water in one movement [1].
The body position is similar, but on the ergometer you do not extract a blade. In the boat, balance joins in.
The Recovery in Rowing: Rolling Forward Without Slowing the Boat