Best fishing is in low light conditions in the morning, evening, and on overcast days. Use short erratic strips mixed in with long slow pulls until you find what they like. Dark woolly bugger or leech pattern with a beetle dropper is catching fish. Looking for shallow coves is the best bet. Also, using a ladder to stand on and cast from helps to achieve better casting distance.
Wind can be a factor.
Moderate fishing pressure. Try fishing the west side of the lake around the North Nets. Fishing a small flashback PT, dark caddis pupa, or prince nymph under a yarn indicator is catching the most trout. On cloudy days decent BWO hatch from 1 to 3pm can provide some dry fly action if you can find rising fish. Fish a parachute, or crippled BWO with a tiny PT dropper.