No, under all conditions.

I'm 85 kg and have righted my F16 singlehandly in anything, including flat water and light winds; The conditions don't get more challenging then this. Arguably my weight is up there but then I never really felt that I was really using all of it.

Funny enough, most sailors, builders or classes don't quote righting weights for such conditions, they all assume the wind is there to help righting the boat. Therefor quoting significantly lower righting weights. As a result you will find that even boats like the H14 and H17 are a downright devil to right singlehandedly in flat water and light winds, if at all possible.

Relatively speaking, there are only one or two of boats more easily righted then a F16. A-cat is definately number 1 and the Swell Shadow is number 2. None of the Hobie's or Nacra's are more easily righted however, not even the H14.

One of the reasons for this is that (even) the F16 alu mast is 4 to 5 kg lighter then any mast used by Hobie and Nacra. The F16's with carbon masts are again a 3-4 kg lighter.

Wouter