?
If it's stained, I doubt you're spooking them in anything over 15fow.
I have this issue too and I attribute it to either them not being bass; or that I'm not on the exact spot that I saw them. If you're sure you are over them or very close to them, I definitely wouldn't rule out a drop shot in any type of water, just adjust your bait color until you find something they like. Try Green Pumpkin, Morning Dawn or Chartreuse. If no go there, and they are on the bottom, try a worm of various colors on a shakey head.