I listen to his advice very closely, and think he is spot on. The exception being the size of tree and the elevation. In alot of lower elevations I don't know if it's the food that draws them in, but something does. Regardlessr where I am I key in on the most mature vegetation in the area. Maybe it's 100 year old trees, maybe its 20. Doesn't matter, that's where I start and usually turn up mature buck sign.