In my opinion a 6 or 5 weight is a good all round trout set up. Nothing wrong with a 7 weight though, which is probably a good choice in windy conditions. Sometimes I even use an 8 weight on the Bow when I'm chucking heavy nymphs or streamers. If the fish you are catching are 3 - 6 pounds, a 7 weight is probably a good choice. 3-6 pounds.... where are you fishing my friend?