I remember you talking about these extension tubes, I think I looked it up then, I'm going to have to do it again and I can't remember them! I am getting that close now with just my macro on and they're not too concerned by me. Occasionally I might get a bump or three... which is them telling me to back off! : ) And when they're telling me, I listen! :D
Oh I just looked yellow jackets up... they look amazing, a little scarier looking but GREAT colours!!!