Hi--I am going to do the swim portion of an olympic distance triathalon on July 10. (1.5km) It is an open water swim in a lake known for pretty cold water. I was a solid distance swimmer (1500, 1650, 1000, 800 etc. . .) through college. I'm in shape I run bike and lift however I have not swum regularly in quite some time. Any suggestions on getting ready for the swim? :) I have pool access. Only 6 weeks to get ready. . . .