hey, I learned a little trick from a friend a few years ago about hiding your plants when its fly over season. In the beginning of the spring when your first making your plot, if you are growing in alders or small tree/shrub areas, you can take alot of those branches and tie them over with string, rope, bungee cords, whatever, and open the canopy right up when those plants really need that sun. Once harvest season comes and the pigs are looking its time to cut the strings and let the branches make a canopy again somewhat shading the plants and making it almost undetecable from fly overs. lol hope you understood that, kinda stoned, thought that might help ya. happy toking