flat water, low end, 5.6m wave sail + 101L freestyle board + 20cm fin. (S-1 + Starboard Flare)
flat water, top end, 5.3m wave sail + 101L freestyle board + 20cm fin. (S-1 + Starboard Flare)
waves, top end, 5.3m wave sail + 85L wave board + 17cm twin fins. (S-1 + Nude Chopper)
75kg.
Basically 100L freestyle board covers all my flat water sailing (5.6m -> 4.2m)... and the 85L waveboard covers all my wave sailing, thou I don't bother with waves unless I can be powered on the 5.3m.
From what I've seen on the lighter end of the scale in flat water, the freeriders will be on a sail 0.5-1.0m bigger, and a board with 10-20L more float. Once it gets towards solid 20kts, they tend to be on similar sized sails as I am, and most of the time they will switch down to 90ish L freestyle wave or wave boards.
The slalom/fast guys will generally always be on 1-2m bigger sail (7-7.8m), and maybe a 120L boards in the light winds. When it gets windier, they are still on 1-2m bigger sails (6.0-7.0m), but also tend to go to 90ish L boards. That said most of them are a fair bit heavier than me, so they hold down big sails in some pretty serious wind