If you are talking about the DIV hunt in Culpeper which has the worst ground on the planet here is what you need to do. I have used an XS there and have been very successful. My diggin buddy uses an Explorer 2 with these same settings. Your SE is a little different but here are some basic settings. First off you must use the stock coil. Nothing can beat it not even a small coil. You will just loose depth. Take your sensitivity to the point where it starts falsing then bump it down a couple numbers. Make sure you run in manual. Set IM at 14 or 15, Deep on, Fast Off, Gain 10. Also you should run in Smartscreen. Maybe the most important thing I have found is make sure you sweep very slow and keep the coil as close to the ground as possible. Digging in that powered iron dirt is tricky. Many good signals will jump around on the screen. If it even hints at being a good signal then dig it. You can expect about half the depth that you are used to getting. If you know your machine you will do OK. Hope this helps.
Marc