If your looking for Salmon this website will help
www.fishlakewinni.com , as far as finding them now is the time, the Salmon along with Lake Trout are cruising right on top now looking for smelt. Smelt worms and lures work great this time of the year, as the water warms up the Salmon go deeper, so technology like downriggers and leadcores help out. As far as finding "Honey Holes" are hard to find, but by boat hang around Meredith Bay or Saunders Bay trolling at a speed of 1.5 to 2 mph if your just casting and sitting around use a bobber and bait keep your drag loose and let the Spring air of Winnipesaukee set in.
Good Luck, there are some nice fish coming from Winnisquam I'm hearing
~Brian~