I don't have much experience with Smallmouths (but I hear they are great fighters) but comparing Striped Bass ... pound for pound, Bluefish easily outfight them, as does anything in the Tuna family.Much appreciated. Smallmouth fishing is a blast. Pound for pound they are one of the scrappiest fish. Especially when they get into that 3lb+ range. Second only to striped bass IMO on the size vs. scrappiness scale.
Hook a Bluefish weighting in the teens on a spinning rod, and you will have all the fight you ever wished for. Striped Bass twice their size will not give you as much fight. Too bad Bluefish are not good eating because they are the scrappiest fish I have ever caught (and be careful when you unhook them, or you will be scarred for life - and they will go for you!)
A brief marinate to remove the fish flavor, and some Oregano will make them edible.