Stuart,
as Gary says,you would be much better hiring a boat as much of the loch is still closed to bank anglers.There are two main bank stretches open,at Glenlaggan and new Galloway but they are being fished almost constantly so are better avoiding just now from the bank.
If you head up the loch towards New Galloway there are a couple of islands which are worth fishing around,as well as the weed beds on the west bank.If there is a coarse match on either permitted stretch then the huge roach shoals may be congregated round the ground bait of these anglers so it could be worth fishing opposite them as the pike will follow the bait fish.
By the way,if you happen to find yourself in the bar at Lochinvar Hotel just up the road in Dalry,say hello to Lester for me!