When I had my F16, I raced it almost exclusively solo, with main and spin. It was an absolute blast to sail with that set up. I frequently sailed handicap vs F18s, Hobie 20s, and A-cats--it was very competitive in that group until the wind gets above 15. At that point the double trapping has an advantage upwind and the extra hands help managing the chaos rounding marks and jibing. Overall, a very manageable boat solo--especially if you're about 150 lbs.