People vary so much in their tolerance to cold it is difficult to advise someone accurately as to what they should wear at a given time of year or at a particular water temp. As pointed out above, skiing the course vs. free skiing can make a big difference, as does a bright sunny day vs. an overcast day and obviously the air temp is a big factor as well. Our water temp in central FL were we are right now is about 62º give or take. Cold water absolutely paralyzes me mentally and physically. (But then, I tolerate high heat and humidity better than most having lived in Hawaii for 25 years and spent my entire career working in the equatorial tropics. It's just the way my body's thermostat is set.) My wife, a wimp like me, and I are both presently skiing in O'Neill Fluid Neo drysuits and we're so comfortable in those we're more than happy to float around in the water to rest and catch our breath after a long free ski run with nary a goosebump on a cool, cloudy day. Without them we wouldn't be skiing at all, even in our Camaro Blacktecs, so they are a winter game changer for us. We were skiing a few days ago with a couple of other FL friends. One was wearing a baggy style dry suit plus a hood, and the other just a heater top. The 3 of us in drysuits were warm as toast. The guy in the heater top was game, but admitted to being too cold and was going to call Perfomance about a Fluid Neo after he saw how streamlined ours were. Make no mistake, I very much envy everyone who can take the cold, but my scrawny body can't and there's nothing I can do about it.