The next step before setting off on a VFR flight is to make a navigational plan. The basics of this plan are the same for a clock, compass and map flight, or a VOR navigational flight, or one with a GPS, which everyone should be using by now. Backstops are the cornerstone of any VFR navigational plan. Just using the oft-violated airspace around Camp David as an example, virtually all the hundreds of pilots who have strayed into that neverland didn't have an adequate plan to avoid the area. With a plan, you miss it; without a good plan you might be in violation. Backstops, in the form of surface features, VOR radials or GPS waypoints can be used to steer clear. For example, staying east of Highway 15 or north of the 270 radial of the Hagerstown VOR, or using airway intersections in a GPS flight plan, can keep a flight clear of Camp David airspace when the area is not expanded because a VIP is there. If the Flight Service Specialist says the area is larger, use backstops that put extra miles between your airplane and the area.