Last summer, I learned that an old barge where I commonly caught flounder had a deep side that drops from 6 to 18 feet. When the tide ebbs, that ledge holds huge flounder, with 5-pounders not unusual. I didn’t know the ledge was there, however, until friends and I hooked a big fish near the place, and I swung the boat around and away from the barge to keep that flounder out of snags. In doing so, I noticed the Fathometer, which quickly fell from 6 to 18 feet. The spot is not shown on any chart or GPS-mapping unit that I’ve seen, and it is a sure place for flatfish. Since learning about the ledge where that barge rests, I’ve checked the area with side-imaging sonar and have discovered another deep-¬water barge near the first barge and several large parts of old barges nearby. All hold flounder, redfish, black drum, seatrout and sheepshead.