RE: FOAMIE WIND LIMITS?
Small HOTLINERS, like the Gerbardht "BABY" (from Hobby Lobby) although not made of foam, but weigh in at around the same as a "foamy", will handle very strong wind up into the 20 plus knots region.
Its all about penetration. Many foamies are scale warbirds etc and their slab sides catch the wind and make them quite a handlful in strong breezes.
Others, such as Zagi's or Twin Vipers, fare batter in wind.
Where I live, wind is the norm rather than the exception, especially in summer when the sea breeze gets up to 20 -30 knots at times. When it does, a Hotliner is the best order of the day. In the cooler months when the winds die down, Alfa foamy warbirds etc are quite popular.