Being a fletcher is a profession, not a craft; you do not craft fletchers. An appropriate craft would be "Craft: Arrows".
In pathfinder, its Craft(Bows) which is used for either bows or arrows. Or craft(weapons) which is used for crossbows, bolts, melee and thrown weapons.
Dogpile Arrows: These are actually crossbow bolts and they don't do any damage, but when a target is struck by one all creatures within sight must make a Will save or be compelled to immediately charge and grapple the poor fool who fired it.
Stiletto Bolts: These long, thin rods of steel only inflict half damage but they pass clean through a target and subsequently make an attack roll at -4 against an additional target directly behind the first.