Smallies on Minnetonka are few and far between. I've caught them there, but only by accident. You might want to try on the west end, but I have to tell you, you might want to target bucketmouths. 'Tonka is world class for them.
Tonka smallies can be tough to find this time of year. But they are not impossible! Smallmouth bass love rocks, so look at a good map and locate any rock structure you can. Anywhere between 3 and 30 ft. I do have some sweet spots on the lake to catch them year round. However I am not going to divulge that information, strictly for the lake and the fish's benefit. However I will offer some helpful hints. Main islands hold a beneficial number of smallies. Remember rocks is the word! I would start with small compact bright spinnerbaits until you catch one. Then remember the rule of thumb. Where theres one theres more. I would slow down and offer a shakeyhead worm or a tube bait.
Also if you have a good sonar unit scan over main points and watch to see a very hard bottom. Ideally you would want to see semi hard like gravel and then sudden hard bottom. (Rocks)
You also need to remember that they mark all your reefs, and points to, in respect for Stick 'em I can't tell either, If you really love smallie fishing come up here to the shore, there all over the place, hook ya up on where to go. Chef
Even eminent chartered accountants are known, in their capacity as fishermen, blissfully to ignore differences between seven and ten inches, half a pound and two pounds, three fish and a dozen fish. ~ William Sherwood Fox, Silken Lines and Silver Hooks, 1954