I am using Mero Ballistic software to help set-up a range card. With the way I am shooting Hunter class it is not feasible to put my card on the ground. Last night made a holder to go around my neck. Worked out well for me today. Thought of possibly doing one for my left forearm similar to an archery arm guard. The card is printed on heavy paper then glued to card stock and sealed with packaging tape. Keeps it waterproof and stiffer for putting in the holder.