(yes wout I know you can carry all sorts of righting aids also but they are a pain in the butt. I can right my a cat just by holding onto the dolphin striker and leaning back. I weigh ~ 165 lbs.
(165 = 75 kg) Of course this is very nice, still you can right the alu masted F16's with a simple righting line as well. A little more effort then just grabbing the dolphinstriker but not much more effort. I think that for an alu mast that is still pretty good rightability. An carbon masted F16 at the current rules will also allow you to right it with minimal use of the righting line, a little more then with your A-cat but not by much at all.
The righting bag comments made by me earlier were in relation to the hypothetical case of a 61 kg or less skipper (= 132 lbs), how many of those do we have ? Besides these skippers (solo) will be way uncompetitive on a F16 anyway, they simply won't have enough weight to keep the boat down in anything above 6 to 7 knots of wind.
It is not like the sky is falling down.
Wouter