Registered: 09/14/05
Posts: 12686
Loc: Central Florida
The "#18 holes" are to assist you in attatching a spear. You can whittle yourself a long stick, shove it down the tube and lash it into a more "fixed" position by wrapping 440 cord around the shaft of the spear, looping it through the provided holes and securing it with (hopefully) your vast knowledge of proper knots for proper jobs. Hope this helps. Best, Capt. Chris