Have not used them but been looking at them and may order some to check them out. My thinking is that their best use would be for longer shots in windy conditions. Probably would try to use them if I was planning a hunt out west. Very interesting concept. Think the name could have been catchier than FOB like "foil fletching technology" or something....just my spare change... Also, i do like shooting groups and this pretty well rules that out. Let us know when you try them.
