You can use duck tape for a 3 fletch, but is more difficult. You can bling it up with differnet colors. Camo pattered duck tape might look better, but would be a lot harder to find outside than neon pink.
![Cheesy :D](http://www.primitivearcher.com/smf/Smileys/default/cheesy.gif)
I have used palm frond clippings for fletching. Not great, but not bad, until it dries. Then if it holds together, it cuts your hand.