I decided to try TTF in a small park that's given me a lot of silver, but which I've scoured pretty thoroughly by now. In two brief hunts I got three old wheat pennies, a cub scouts bob cat pin and a 1906 V-nickel. All of these targets were right next to iron targets, which would be why they were still there after all the times I've been over then in conductive. It's a much more annoying way to hunt than in conductive, but it does hit those targets that you won't hit otherwise. It wouldn't be usable at sites where there was a lot of trash other than iron.