I would hunt the narrow place between the island and mainland! I bet the bucks hang out and bed up on that island.

Are those fields east of the road? That would be a good place for them to feed at night and then go back to the swamp to bed. It may be worth a try. Also there looks to be a draw or bottom that leads to the road and close to the fields on the other side. Setting up along that could be promising as well. Right were it looks like three fingers coming together.