[By-Catch]

Tomorrow I am taking my 12 yr old nephew to the pool for some bass & perch fishing. The last 2 years I have only fished unit D in my kayak. I always seem to catch several bass but nothing of any real size as compared to some of the reports I've seen.
I would like to hook my nephew up with a Big Fish if possible. We will be in a 12ft boat with troll motor only. Can someone give me advice on which area would be my best bet to get him one.
Any advice would be appreciated by me and my nephew