RE: Earliest planing with 8.5 m2
I can hardly plane in 13 knots with a 8.5 (I'm 97 kgs)...
Guess the limit for me is around 20 knots.
My former big sail was a twin cam lightning 9.4. It could take very close to as much wind as the 8.5. Anyway when the 8.5 gets too big I'll just switch to a 6.5 without any problems.