We use both FRS and cell-phones to stay in touch. The area we hunt (3150 +/- acres) is pretty much flat, and heavily wooded with both planted pines of various ages from about 10 years to 20 years. We also have mature hardwood covered SMZ's. A 20+ mile rated FRS usually covers about 2 miles or so in this area, no problem. Cell phone coverage varies as per service provider, but for us most have at least some coverage. We keep in touch most of the time via cell phones ...text messaging.