Working on boats, I attach a lanyard to my pocket knife. Since the boat i'm on now is dangerous to have a free cord attached to your body, I spliced paracord to a spring clip, and spliced a loop in the end. I can clip it onto my oilskins and let the knife hang down inside. The splice is safer than knots so it does not hang up on something if it is adrift. Its easily accessable by tugging on the string, and if caught up, the splice will part off under a heavy strain. The clip makes it easy to remove from the strap of the oilskins. Plus, its bright orange, so I can't miss it. For my sheath knife, I made a turks head knot over the pommel, and tied the bitter ends together, making a pinky loop. not too long where it'll snag, and aids in the wuick removal of the knife. On my fillet knives, which are straight handled, guardless Dexter russel 5 inch boners (thats what it says on the box...get your mind out of the gutter!) I use the half hitch wrap described earlier. i use cotton seine twine, it shrinks when wet, and the wooden handle swells, making it tight. For slippery handled knives, if you so decide to put a wrap on one, use a piece of electrical tape or duct tape. keep the sticky side up, then put the wrap on it. that way the cord stays stuck to the handle. if you remove the cord, the handle won't be all sticky from the adhesive.