I can vouch for fishing a wacky senko with a bobber.
It has kind of been an inside joke in our bass club because one of our members had won a tournament with this method, but he was catching largemouth.
Our last tournament this past fall was at Burt lake, after having terrible luck trying to catch anything i had pulled up on a weed flat in about 8 ft of water toward the end of the day, fish were surfacing everywhere but for the life of me i couldn't get a bite.
I was throwing a wacky senko on a wide-gap hook, and jokingly told my co-angler i might have better luck with a bobber!
I set the bobber so the senko would be hanging just above the weeds. On my first cast, not even 5 seconds after being in the water the bobber went under, and i landed a 5.08, i had laughed about it just thinking it was a fluke until i went from 0 lbs to just under 18 lbs within an hour! I would definitely suggest using a bobber with a wacky senko to catch some smallies!