I'm working on a 30-40 minute presentation to offer at a Club meeting. The topic will be "How Factors Effect Dogs (terrain, cover, wind, lighting). Rather than simply regurgitate material already on the market, I've decided to draw on the wisdom and experiences of this forum for ideas. I'm undecided if I'll do this via power point or lecture and white board. For formalities sake, let's assume my audience has all followed a dedicated training program and has dogs ready to do AKC Master level work. What advice would you offer the group as to how factors effect dogs? If you were asked to speak on only one factor(terrain, cover, wind, lighting) and emphasize the most important thing to be aware of as a Handler, what would it be?