I could go on and on what I have done to the F-16. I have used just about every style of attachment, a wide assortment of tubes and I can keep on going. As far as naturals, well I just don't have the patience or the knack of sanding and finishing, I'm really, really bad at it.
The top pic is a F-16 mod that I usually do, paracorded wrapped handle and Bla, Bla, Bla.
The second is a mod with ammo in the grip using standard F-16 tubes but a paracord Gypsy tie.
The third pic is of my general type Gypsy tie .. I ALWAYS have the forks facing forward as the tying does not loose draw length this was and often gains me about 1/2 inch. I'm now using 2mm Twine and two constrictor knots pushed together with super glue to hold the gypsy tie in place. I can't remove it but that is OK, it can be used with flats, singles or looped.
The forth is a rubber band wrap using looped tubes that are stretched around the under side so if the wrapping rubber bands give way the looped tube will come to rest at the90 deg fork junction and not your face !!