Where do crappie go in shallow lakes?

[terryit3]

I live close to a small, shallow lake (no deeper than 10' over the whole lake). When the cold weather moved in, the crappie either stopped biting or moved to other areas of the lake. I have one spot I fish that always produces. There are lots of areas of lily pads starting to pop up, and even though I fished in and along them, I couldn't get any in the boat.

Any ideas or tips I should try? I fish minnows and grubs mostly.

Thanks