Unless securely affixed to the hook, a big conehead can begin to spin and twist during the course of fishing and begin to destroy your fly. We’ve all seen it. Big coneheads, 7/16’s or larger, really magnify this problem. The simply solution I’ve found is this.
1) Put the conehead on the hook
2) Behind it slide the biggest bead you can fit
3) Use the thickest diameter thread you have, (I prefer Uni-Stretch for this as you can really get the thread stretched tight), and build up a thread base tight behind the bead until the cone is secure and will not spin.
4) If done properly you can hold the cone, hook eye down, and superglue the bead to the cone without any glue making its way to the hook eye. The bead and cone should make a tight seal due to the thread base behind the bead.
This method will insure the pattern lasts for cast after cast and fish after fish without that cone spinning out and ruining your fly.
