i saw them demo-ed at the raritan expo this weekend and i was kinda wondering why i havent heard about them before. the guy let me pull an arrow through a whisker biscuit compared to vanes and there was a big difference in drag and all but im always sceptical. he also claimed that it acts like rifling putting a spin on the arrow from the get go like a gun. he also put the arrow on a roller and it spun way faster with little drag compared to fletching. they look goofy but if they work as well as he said the gear junkie inside means i will have to give it a go. the price is a little high but im thinking if i buy just raw arrow shafts i will save money plus i still havent got the fletching process down all that great. any other users or opinions?