Editing Hyperborean Mice:Main Page (section)

===Barbed Tip Arrows and Bolts===

The heads of these missiles have rear-facing hooks and barbs to make them difficult to remove. They are often used for hunting insects, with a silken thread tied to the missile so that the target can be reeled in easily. Anyone struck with an Impale from such a missile will take another d4 damage removing it. A quiver-full, along with the silken threads, is an Expensive item. 

If you strike a foe with such a bolt, you can roll Feats of Strength against their own to try and reel them in. Preparing the silken cord takes an extra round, but once it's ready the missile can be used normally.