How to market an idea for a bow sling?

Several years ago a friend and I came up with an idea for a bow sling to easily carry a bow while walking and stalking elk and mule deer across the vastness of the Colorado mountains. I still use it to this day, and to my knowledge only three or four were ever made. It keeps you from strong arming a bow if you are going to be caring one any distance at all. I hardly ever go in to the woods without it, as it is light, and of simple construction, leaves both hands free, and it is very quick to retrieve your bow from. I have never seen another one in the field other than the ones we made, so that got me to wondering, is this bow sling worth trying to market, and would other hunters use it? I know guys are going to want to see pictures, but I don't want to give up an idea that easy because they are simple to manufacture. Don't want to cut my own throat if it is truly a marketable idea! I wish I could meet up with the Michael Waddell and run the idea past him! What those guys put there name on turns to gold right now!