The video above is our harness but it is similar to this rig system. 
Our own rigs, made in Vancouver, Wa 
Trolls down to .25 MPH with the Butterfly blade. 
* Mustad Slow Death hook
* Northland Tackle SMALL Butterfly Blades
* 2-1/2" Squid body. Cut tentacles if you prefer shorter.
* 36"+ leader (leaders vary by a few inches)
* Float embedded in the squid body for flotation and hook spacer
* Spacer beads