When you say tightlining, are you talking about fishing on the bottom? I haven't fished the alligator much, I usually run out to the Pungo to saltwater fish but I have ran it quite a bit marking holes so have a good idea of the layout of the river, at least the area you mentioned. There is a lot of structure up next to the bank, fallen logs and stumps. I also marked some deep holes up to 22'. Company came in last night so it will probably be next weekend before I make it up there.