Gene left for the timber again this morning so I'll answer the header question. What we usually refer to as a "header" is the top of a washout (wet or dry) where water has eroded out the ridge side. In otherwords, when you have a ridge, because of the terrain, running water (either from rain or an underground seepage) washes out a slight drainage on the side of the hill. This washout creates a slight obstacle for deer walking across the hillside. Yes, they can cross it wherever they want, but it's a lot easier for them to loop around the top of the seepage rather than having to cross it. The top of the header creates a pinch-point of deer movement. BW