Getting ready for Lake Life

We are getting pretty excited. Michigan lake water could be pretty chilly though, the temperatures have been only in the low seventies and lows in the low fifties. As it has been in the 90's all week here (already!) that sounds pretty good to us. What doesn't sound so good is 60 degree lake water temperature. Hopefully the lake we are staying on is small enough or shallow enough that it is at least 70 degrees. I can't stomach anything colder. I know Jamie will want to get in despite the chill so I am praying for a warm up to heat up that lake water!