Hi all, I am really close to pulling the trigger on a tiger shark water detector. I have researched other water detectors and for the price I think the tiger shark is the way to go. I do have a question about depth. What is the average depth of the tiger shark with the 10 inch coil? Also how much deeper is the 10 inch coil over the 8 inch? I will be hunting rivers and inland lakes mostly with a occasional trip to the great lakes. I know all hunting situations are different and can effect depth but I am just looking for average depth. Thanks all and HH.