Hello Tony,
Depending on soil conditions, getting between 6" to 10" inches with the 9" HF coil. I'm more of a relic hunter, do search for coins though when after gold jewelry at parks and school grounds as this type of hunting is very relaxing.
Although I live near nugget territory, always choose relic hunting over nugget's relics and Gold rush era coins are easier to find.
Have a new site to hunt soon, Ghost town from mid 1860's. Just found it, will share finds if they surface. The town was buried from the 1867 flood, piece's of the puzzle finally came together. Took me several year's to find it, very excited.
Have a good weekend Tony, enjoy reading your post.
HH, Paul