its all a pecking order in terms of preference...I personally have never heard any walleye fishermen call smb a trash fish.
Also, if you believed this to be true...then saying this on “BASS” boat central seems to be a bit misplaced. They are an amazing fish to hunt, fight, and catch.
anywho....
to the OP...use the DNR lake finder. On this page you will find a map that shows the geographic location of where smallmouth have been surveyed.
https://www.dnr.state.mn.us/fishing/bass/index.html
Mille lacs is your best bet for trophy smb. Might be some decent places to stay around garrison or just north of there. Good luck.