Fish natural patterns as water warms to coincide with insect hatches. Try Bloodworms, PTN, Buzzers and Diawl Bachs.
Scale down fluorocarbon strength from say 8lb to 6lb. Apart from being less visible it gives flies freedom of movement.
Stay on the move because five minutes in the right place is better than hours in the wrong place. You must be over the fish.
Fish dries in calm water at the top of the wind. These will pick up the difficult fish on hard days. Try Black CDC, or olive versions.
When lure fishing, drop down to a single fly and long leader of 15-17ft. A team of flies can put fish off resulting in follows only.
Don’t ignore the shallow margins, as resident fish will be here. There’s plenty of food present and the weed provides the cover.
Work the water depths. Avoid one fly, one depth and one retrieve - mix things up. Fish move around the lake and through the depths.
Ask fishery staff for information about productive areas and flies. This saves time allowing you to work out the feeding depth of the fish on the day.