Kai was born in Germany, where he obtained a master’s degree in Nautical Engineering from the University of Oldenburg.

His knowledge and experience training super athletes like Annika Sorenstam, Grant Hill (NBA), Will Asher (Waterski), Eddie Cheever (Indy Racing) and many others is invaluable. He has been involved in professional sports since 1985, first as a professional water skier, and later as a water ski and wakeboard coach and trainer.

In 2001 he implemented his coaching philosophy to coach Annika Sorenstam until the end of her playing career (72 LPGA wins, 10 majors). While training with Kai, Annika gained more than 25 yards of driving distance and improved her accuracy as well. As a result, she was elected Female Athlete of the Year 2 times in a row.