I heard some guys that shoot feild archery say they plug both ends of the bare shaft and float them in water???? They say its to find the heavy end of the shaft?? I have pro tours coming and im thinking of doing this. My ? is.. Dose this work? And if so how should i flech them? do i put the cock vein to the heavy side, lite side.?? Dose it matter as long as they are all the same??