we gave shallow trolling a shot last weekend. 3 colors off each board and # 6 sinking fly lines straight back. we did catch some small fish out in front of the songo on sebago, but we did better out in open deep 200 foot water down 45 to 50 feet deep. the males really look good right now and look ready for the spawn, but we didnt catch much near the river. mergansers were catching smelt there, so i know the smelt are up on the flats in the morning right now. maybe a good hard rain for a few days will pull them up, but we didnt find them.