1. Approach Speed: The speed of approach was far too fast for safe docking. A slower and more controlled approach would give you more time to react and adjust.

2. Fender Placement: The rear fender was adjusted to a better position at the last minute (!). However, it was squeezed excessively due to the speed of the approach, which can damage the hull over time.

3. Insufficient Fender Coverage: At 07:47, it’s evident that with the boat’s speed and the poor placement of the fender, there was only 5 cm clearance between the hull and the pier, just 0.5 m behind the fender. With one fender missing on the far stern part of the port side, a sudden gust of wind could have caused the hull to hit the pier. A fender should have been placed on the far stern section for better protection.

4. Bow Protection: The high speed caused a rush to protect the bow from hitting the mooring pylon. A slower approach would have reduced this risk.

5. Cleat Hitch Knot at 08:10: The cleat hitch knot was incomplete, which could cause it to loosen by itself. This is a critical mistake in securing the boat.  

6. Knot Error at 08:38: The cleat hitch knot was finished incorrectly, with the final loop turned the wrong way, compromising its hold.

7. Knot at 09:04: A proper cleat hitch knot should have been used here. It’s secure even in stormy conditions. If in doubt, you could add an extra figure-eight loop before finishing.

8. Pushing the Keelboat at 11:20: Pushing a keelboat by hand in strong winds should be avoided. This is unsafe and unnecessary with proper technique.  

9. Suggestions for Single-Handed Undocking at 11:20: 

a) Keep the bow spring line but convert the cleat hitch knot to a slip line. From the boat, use slow ahead to release the spring line gradually, maintaining control, and then retrieve it. 

b) Use a stern line only, also as a slip line. Considering the wind, the fenders should suffice. Again, use slow ahead to loosen and retrieve the stern line safely. 

c) Alternatively, for these wind conditions, use the stern line as in option (b), but immediately gather it after engaging slow ahead. Never leave the boat entirely disconnected from the dock in such windy conditions.

10. Final Note: At 08:05, you mentioned this docking maneuver was a “10 out of 10.” In Scandinavia and most European countries, this would fail a skipper’s exam due to the safety oversights and improper techniques highlighted above.