I would always catch my limit at Hot Hole Pond in Loudon. I also had good luck with brookies on the Lamprey River. Bass and Perch were the catch on Lake Massabesic, Auburn. The Baker River, aka Asquamchumauke, Rumney is a joy to fish.
I currently only fish catch and release....used to eat them, but don't anymore.
I love fly fishing and tie my own flies all winter long as a hobby. I have a new batch of muddlers all ready to go. The most fun fishing was, believe it or not, the Merrimack River in Concord. I caught a bass on a muddler fly and he fought me all the way to the shore. Good size too, but just covered with parasites....