ok stick with me for a minute said the spearfisherman to the fish,does anyone know who can help with the purchase of a spearfishing/single barb shaft that you can screw together after having been in a suitcase and use with a hawaiian sling /trigger, a 3 or 4 piece shaft,say to take on holiday,or is it cheaper just to make your own trigger/and buy a spearshaft and take it to a an engineering co.and have it done that way