I am good with the DFX but new to E-Trac. Alot of our camps we have hunted hard. Everything comes deep. The DFX with a 12X15 SEF has reached its limits. I bought a E-Trac to get deeper. I have a 12X15 SEF on it. With the DFX we would dig anything that we could get to come up on the + side (with counduct). What is the numbers I should be digging with the E-Trac to be getting the same thing. I have ordered Andy Sabisch book but its not in yet. I have had one trip out and just dug square nails. Help!