Thank you, Alfred, for your reply. I appreciate it.

I will investigate if I can do such a pier myself since I also did my current pier. Your equipment is much heavier than mine so a DIY one could be possible.

What is the angle of the "knick", is it 100° as mentioned in one of your links? You are located in/near Frankfurt with Latitude ~ 50°, I live close to Munich with Lat 48°, would the 100° angle be OK also for my location?