I use my senko's whacky style.I use the o-rings because it keeps the worms from ripping as much from the hook.You can move the hook on the worm like someone else said,but you still get rips in the worm.I just move the o-ring to give it a different fall.I also use the black and red o-rings.I use the red ones to try and match the colors of the worms.I also will put on 2 or more o-rings to add weight for faster fall.
Since the worms are so expensive,using the o-rings saves the worms from ripping so you don't go through the worms as fast.The whacky tool is the way to go to put on the o-rings.You can put on the o-ring without the tool by just wetting the worm and o-ring and sliding it on the worm.I also will stretch the worm sometimes to break up the solid color of the worm and give it the used and abused look.I find using the correct line is key to fishing the senko's.Certain lines don't
fall as good as others with these worms.I use the yo-zuri smoke colored line in 10lb test.Found this line to work the best.Fishing with the senko's is also about the technique.I have fished with some of my friends who also use them,but their technique isn't quite what it should be and i usually out fish them,not bragging
,just seems the technique is key.I use the gamakatsu 1/0 or 2/0
hooks.I also use the flourescent colored walleye hooks and match these to the color of the worm.Green hook with green pumpkin/watermelon,green pumpkin,green laminate.Orange hook with orange worm,red hook with red shad and so on.I sometimes will put the plastic rattle inserts in the worm to give them some sound and more weight if the bite doesn't seem to be on.Senkos are my go to worms on a regular basis.