Seems you have to follow a specific path to hit invisible switches. I am playing AE canyon mod and i have 3 charges and I am at the hang glider with the compass showing me I should be there but the next coordinates DO NOT establish. I am right on the flashing current coodinate but it won't forward to the next one. I move all around it still does not switch. Doyle did just say "the PDA is near you but not exactly located" so I looked all around. Where do I go to get the coordinate to pop up?

OK I get to the first flyable glider and the coordinate is right on it but it does not switch to the next one. If I fly the glider it does not switch. Where is the PDA if thats even true that I am looking for it or maybe Im looking for the coordinate point? WHERE?