My favorite bait from Nikko Baits is the 6" "Bass worm". It's about the diameter of a senko but it is a floating worm that I have found to be absolutely deadly on a shakey head. All Nikko Baits are made out of an elastic material that will hold up to lots of fish, I average 30-40 bass on each worm before the bait is "spent". The baits are also biodegradable so if you lose one you don't have to worry about your bait swelling up to 5 times its original size and then being consumed by a bass, which usually doesn't end well for the fish.
I rig the worms on a Strike King football shakey head, the baits are hollow so screw-loc shakey heads won't work (those darn things prevent you from hooking fish anyways!). The 1/8th and 1/4th are the only sizes I have used, they seem to cover most of what I do which is 0-20' of water. I fish a lot of rock and brush with these, and the hollow body makes a shakey head MUCH more weedless than a solid bait, when I rig it I just pop the hook through one side of the bait, and the other side makes a very good weedguard, but not to the point that it prevents you from hooking fish. These worms are the only ones I have successfully fished in and around beaver huts on a shakey head. The action of these baits is incredible, they stand straight up when they are on the bottom and the bait moves with any action imparted from the rod tip.
That probably sounded like a sales pitch for the banjo minnow but it's truly my honest opinion about the baits, I'm not benefiting from this I just want to put the information out there because it really is a bait that deserves recognition. I bought $50 worth of them about a month ago that will hopefully last me until I need to buy more!
They come with a few different style tails, unfortunately the only color they have is green pumpkin unless you want a pink or yellow bait which in my opinion is silly for anything but bed fishing, green pumpkin is it. They make a few other baits for bass, I haven't tried any yet but the fluke looks like it would be great on a drop shot. I have used lots of their panfish and trout baits, plenty of catching with those but nothing like what the bass worms do. Check them out http://www.itsumofishing.com/
That 10 I caught on Tuesday.....You can see what she ate