(Lihgt?) Anyway, I think surfing in light onshores is fine. And I also agree with f.s.c.g. that it does sometimes depend on the break. Although, isn't FLA just a big stretch of beach other than a few popular inlets? You pretty much have to surf whatever you can don't you? 'Cause if one spot os onshore then evrerywhere is.
It all depends on the beach honestly, some handle onshores better than others, i think as long as it's less than 15mph it can ben fun, start getting into the 15-20 range and it starts to be a bit much.