Here is the latest piece of the 6 meter yagi antenna I’m designing / building. Since my plan is to use a hairpin match, the driven element needs to be isolated from the boom. I used ABS 1″ diameter plastic rod, and epoxied 1/2″ diameter x 1″ long pieces of aluminum rod, which had already been drilled and tapped for 1/4-20 whips. The notch had to be deeper to match the offset on my reflector and driven element mounts, as shown.