Wacky rigging Senkos is an proven presentation. I use O-rings on my wacky rigged Senkos because they help reduce bait mortality and a depletion of my bank account. To put an O-ring on a Senko, you need an O-ring rigger. You can buy a commercial O-ring rigger. You can also make your own with some simple tools and inexpensive materials.

Materials
- Sharpie Marker
- O-Rings
- 1″ 8/32 Machine Screw
Tools
- Safety Glass
- Plastic gloves
- Needle Nose Pliers
- Philips Screw Driver
- Power Drill
- 1/8″ Drill Bit
First, remove the internal cartridge with a pair of pliers from the spent Sharpie marker. Be sure to ware plastic gloves and safety glassed.

Second, make a hole on the end of the Sharpie chamber with a power drill and 1/8″ drill bit.

Third, insert the O-rings into a 1″ 8/32 machine screw and drive it into the Sharpie chamber with a screw driver. For large O-rings, insert a flat washer and then the O-rings to keep the O-rings in place.

For large O-rings, insert the screw through a flat washer and then insert the O-rings.
I fish 4″, 5″, 6″, and 7″ Senkos. I use three different size O-rings. I have three O-ring riggers, one for each size of O-ring. My DIY O-ring rigger gets an O-ring on my Senkos just as well as my commercial O-ring rigger. Equal performance at a lower cost. The choice is yours. 😉
