My wife and I have just had ours for a year now. Most exclusively on Lake Lanier but we've taken it to FL and sailed in Choctowatchee Bay. One day, winds were 10-15 and seas were ~2-3ft, never felt unsafe. I'd feel fine taking our's out on the coast but the weather would have to be right as well as the forecast. Once you're out there, you're out there. Granted, we're novices on the matter so I'm sure much more experienced sailors will have greater incite.
It always goes without saying though that you have to keep an eye on the weather. Good luck with your search.