I' m a recreational kayaker, age 62. After years of running, my knees are done, so 2 years ago I started to kayak. For half a year I tried different boats, but was almost immediately convinced when I tried the Cetus. The seat is marvelous. Getting in and out is easy, even with my bad knees. I'm kayaking a Cetus MV for 1,5 year now. My average speed in the Cetus is 7,5 kmh on the canal. On the Northsea, my speed depends too much on the currents and the wind to mention an average speed.
I'm extremely happy with my Cetus. I feel very safe in it. It is very stable, and rather easy to turn. Downwind at 4-5 Beaufort, I tend to capsize, but that's due to my poor technique. I'm changing to a Greenland paddle now and hope that will help to stay stable under those conditions. It's a solid boat, perfectly manufactured.
The only minus is the weight. With 27 kg, it's quite heavy.