You will be limited in your flecthing-rest clearance. A 5" feather will not work a 4" maybe but doubt it. A 5" vane will be in the rest a 4" might be. this might cause unwanted noise when the bow is drawn. If you use a w.b. you will have to load the arrow pull it back some and stuff it in the rest. I would like to here how it affects your accuracy.