do you have a tpo pic of the ridge t upload? I would try to stay off the river bed myself... @ 50 yards the ridge would be the way to go for me.. it is elevated and it sounds like there is good cover... where in NH are you going to be hunting?
ANYONE WHO TELLS YOU HUNTING IS WRONG... TELL THEM TO READ THE BIBLE:
Now then get your weapons-
Your quiver and your bow-
And go out to the open country-
to hunt some wild game for me