Wind, temp, and the fact that there was a lot fo 30+-inch-thick ice on the Lake this year. So while the photos from nhboat.com indicate we are ahead of some recent years, there *could* be some thick chunks stubbornly clinging to life out there.
Then again, it could be ice-out by this time next week.
Me, I'm adjusting down but still stubbornly clinging to at least April 20.