I have a stock coil on my GTI 1500. Is there a coil recombination for sites that have a lot trash in the ground. I went to a river front park today and my detector couldn't lock on anything. Ended up leaving empty handed. I know the smaller coils will work, but no imaging. So my question is ,....,How do you use a smaller coil without imaging ? It sounds like a stupid question but I don't like digging a lot of trash. Is the 4.5 in. scorcher a good choice?