If the fish are showing ( normally on the more sheltered parts) of the larger lake) try CDC ( I use smaller sizes, cant see the plumes but sometimes see the fish move) fish slow or static. I also use small ( 14,16 & 18) black spiders) which can be pulled.
If nowt showing try zonkers or rabbit tailed lures with SERIOUS weight on board together with floating line. Cast as far as, let it sink to the bottom - getting fish on the lift.( Tried various other combinations with little success).
In warmer weather miniscule nymphs (Hares Ear and PTN) are worth a try SLOW.
You need a wind for Witton and today it blew.
Some crackin fish in the lakes
Enjoy
Feed the fish flies