thats a shitty deal bro, if that guy asks you are just a random hiker. if i were you i would go early in the moring or late at night around 7. try your best to cover up the trail or make other trails leading to no where around there. if you can go different ways to your plant dont go the same way. if that guy stays around alot i would recomend moving your plants somewhere else. people are way to nosy and everything and anything wants your plants.