Thinking "outside the box" is how I roll sometimes to keep things interesting. Not that there's anything wrong with what's already available, like Alan's killer knobs. I'm sending Hardy Boy a couple blades, and took it upon myself to add knobs to them. One with Alan's knob and one with my knob. I'm certain we will hear from Todd about his thoughts on the flexible knob, and Alan's knob, along with pics of halibut, lings and black cod. I can only dream of living the "hardy boy" life, cause I'm stuck in Puget sound

The foam knob does have a 2.5" inner aluminum core. The rest is all foam. The foam knobs are hand made one at a time by yours truly