RE: garmin astro
i have garmin gps.
its fine in deer season after leaves are off trees but with leaves on, you will go in your pants with 30 minutes of light left and canopy is blocking signal.
this has happened more than once.
sooooooooooooooooooooooooooooooooooooooooooooooo,m ake sure you carry a compass and check it also before you go in woods .