A simple modification to a D.O.A. or equivalent plastic shrimp will allow you to cast it much farther. I push the head of the shrimp back away from the eye of the hook, remove the rubber from a small rubber-core sinker and crimp the sinker around the shaft of the hook. The sinker already has a wide slot in it for ease of crimping. You can adjust the size of the weight to accommodate any fishing condition.