How well does the Terrapin work on flat ground on man sized targets? Im tired of not having a rangefinder that will not pickup man-sized targets or deer without a decent background. I have tried Zeiss and Swaro and wasn't pleased. Most shooters I've seen here at least have some hills and backdrops on their targets. Here where I shoot we can reach 1700-2500 yds with no elevation change. The Ziess and Swaro seem to die off after about 600 yds.