I am looking at doing my first Ironman in 2011. Have thought about signing up for CDA. However, I don't have a lot of experience in cold water swimming. Looking over the CDA site, it reported the water temp is usually 63-64 degrees..Is this a problem for anyone? Or, I am just being a little timid here; no guts. Of course, I have a LS wetsuit and have done a couple sprints in it but nothing like that water temp reported for CDA.