I agree and watched Greta last night and she said they did some research and found that at the time this guy called the tip in about the duct tape dumping in the ocean thing, there was NO info out on any duct tape yet anywhere they could find. So IMO even though the cop said it wasn't credible, this guy is probably telling the truth. Cop (sorry - can't spell Broccolini LOL) probably did not want to put him up as a credible witness and have gagmeoff shoot him down.
Except that Peterson was video taped daily walking around with duct tape supposedly on his way to put up posters. And not to mention the "$500,000. REWARD" sign was duct taped to a couple of steel stakes on Peterson's lawn.
Of course a bogus tipster would claim duct tape was used, Peterson was photographed with duct tape everyday for a while. Greta needs new investigators.
Duct tape was mentioned here by yours truly in February of 2003.