I saw a nifty technique on, of all unexpected places, a cooking show on PBS. According to the show, in parts of England costal dwellers would wait until low-tide and anchor a line parallel to the water at the low-tide mark, usually just prior to dusk. In this case the distance between the low and high tide mark appeared to be 100 yards or more. This line (rope actually) appeared to be about 150+ feet long, had baited hooks attached every 20 feet or so, and was anchored in the mud at either end. When the tide made a full cycle (12 hours) the lines were checked. In this case, only one sizable fish was caught. I've spent lots of time fishing on the coast, and until I saw the show, the thought never occurred to me, duh! I'd be willing to bet that this sort of fishing is illegal just about anywhere in the US, especially here in New England. Just goes to show that you can get some good ideas in unexpected places.