The thick weed beds in the coves and along much of the north shore would make for tough retrieval. The south shore is tree lined and steep, but perhaps can be waded in places....but there is no room for a back cast. It seems to be a lake where you would need to get onto the water to fish it effectively during the months when the weeds are high in the water column.
PS Conestoga is stocked in the stretch from Cocalico Ck downstream to the Lancaster Waterworks Dam. I do not know where the actual stocking points are, but that should not matter. It has been stocked at least every other year in that stretch with 700 tiger muskies or more for about two decades. The fish have swum to the best habitats by now.
Mike
Mike