It would be premature to go to any retailer. They deal in products not ideas. You need to have a patent search done. In order to do that you need to have very detailed technical drawings etc... I beleive the U.S. patent office has info on exactly how to get your idea to the point where a search can be done. At some point, you will have to hire a patent attorney to actually do the search and file the patent application. This actually includes a working prototype, I believe. Then you produce a few to show to prospective distributors. Its is risky to actually try to "sell" your idea/product before you have it protected. You never know, every sportsman in the country might line up to fill your pockets. Don't take any chances. Trust your instincts. Don't trust anyone and make anyone you speak to, including an attorney, sign a non-disclosure agreement. You can find those on the web. Good luck lab coat guy.