I fished lake ponchatrain 2 fridays ago. Launched at Mandeville Harbor and headed to the causeway. Once you get there, drop the trolling motor and troll along the causeway. Keep your bait tight to the pillions and on the bottom. I have heard that live shrimp under popping corks work, and also that Mirrolure Top Pup....Haven't had any luck with either one of those methods. Try your best NOT to fish during slack tide.....the bite seems to stop. Its really nice if you dont have a bimini top, because that 24 mile "reef"(the causeway) cast a 24 mile shadow all day!!!! You can fish all day and never get in the sun.