Hi. I'm going to be shooting a good deal of sports in the next two years at school. I'm going to start at least with the 70-200 VR, then a 300mm f/4 (based on reviews maybe with a replacement Kirk's collar), and eventually get other big lenses, but I'm asking for recommendations in this range of lens weight. I currently shoot a D70 and will likely upgrade to the d100 successor when it is released, and I will get a battery grip for it if available. I was wondering if you could give me some pointers about a monopod for shooting our school's champion teams with some semblance of steadiness I'm new to the whole monopod thing, so any general pointers as well are appreciated.