How cool is this - Porsches and Sailboats... Been sailing ever since I was six - 39 now. I forgot what number boat I am on (#9 I think) - but my current boat is a San Juan 24 that I totally rebuilt. Here is a picture in my back yard.
I have found that sailing (especially racing) is great for driving, you learn to be smooth through the curves, carry momentum, etc...
BTW - Catamarans are straight line fast but not maneuverable enough IMO to be compared to a 911 – try a 505 on a “fire hose” plane with the chute out and on the trapeze in 25 knots of wind. Then you will find god…