Velocicraptor said..
Did you feel like you lacked control of the wing and were just having to dump all of the power? If so, you needed a 3m, and the smaller foil wouldnt really help you.
Did you feel like you just had too much lift and were moving too slowly, but had adequate control of the wing? If so, the smaller foil would help.
From the sound of it you need a smaller wing and the smaller foil isn't the issue.
Im a similar weight and I can comfortably fly a 4m into the upper 20s. Things get a bit less efficient in the 30s, but Ive flown it into the mid 30s and still been well in control of things and having fun. Im on a ~1250 sqcm high aspect foil which could have similar lift to your larger area mid aspect (who knows). I'm pretty surprised you would feel that overpowered on a 4m in that wind.
I felt like I needed to dump the power and just bring it down ever now and then for a boost. I think perhaps a more HA smaller foil would help. I think it was perhaps the sea state which was all over the place due to wind direction, tide and sand bars. As you say a 4m should feel OK in that wind..
