Hi Edgy - I have been launching off Kenton for about 10 years now - normally in a 5.2m duck but every now and again off a cobra cat. My mate has a jet Ski and launches off kasouga and loves it - only thing is that he is limited in distance and will only go out if he has another mate with a jet ski / boat (buddy system) as the weather turns lousy at the drop of a hat and windguru usually get in wrong..also it is always a wet ride. They are easy to tow and launch etc but not as comforable as a boat
having said that, if I were to choose I would probably stick to a duck as they handle the surf very easily and you can run out further - also you have 2 engines instead of one on a ski. also compare the prices and reliablilty of a second hand ski vs a second hand 18ft boat... If the sea is too lousy to launch a boat on, I am not too sure that I want to be a ski on that sort of water..
Just my 5 cents worth. I will drop u a pm next time we go out in kenton!!