We have eaten at a place that I think is called Sunshine & Pa's a couple of times and they've got a great breakfast. I know you said in Gilford, but S & P's is right in downtown Meredith, not a far ride from Gilford for a good breakfast (a great place to go by boat). You probably have to go early though, i've seen the line out the door on more than one occasion (a sure sign of good food).
I really miss a place I used to go in Alton when I was a kid. The place was called "Mel and Sallies". It was right next to the old Alton pavillion and man they had the best home made toast, and some really cute waitresses.