now i've thought about it and never got motivated to ever build one for trial. i've had plenty of success stories with out one but i met a guy who wont leave home without it. just so everyone's familiar basically you construct a piece of fabric or mesh roughly the length of your barrel, sew your grid or netting on to it, tie in your jute and other veg, and slip it over your barrel so only the crown is protruding. my rule of thumb has always been, NOTHING TOUCHES THE BARREL- as it's free floated for a damn reason, what say you?