Here's what I have for a record:

Ice out May 2nd, 2007.
Ice in Nov 21st 2007 - Ice Out May 17th 2008
Ice in Nov 29th 2008 - Ice Out May 5th 2009
Ice in Nov 28th 2009 - Ice Out April 20th 2010
Ice in Nov 23rd 2010 - Ice Out May 11th 2011
Initial Ice in Nov 19th, partially blown out Nov 22nd
Ice reset in main lake Nov 23rd 2011- Ice out May 2nd 2012.
Ice In Dec 7th 2012 – Ice Out April 28th, 2013
Ice in Nov 21, 2013 – Ice Out May 6, 2014
Ice In Nov 30, 2014, Pineapple express opens up main part of lake Dec 8, 2014 – Ice Out April 13, 2015

And I would think it would be later than usual this year.