Depending on where you spots located and even if it is to far....
Some trip wires carefully placed connected to a series of...
Bear bangers, can alert you to a sneaky intrusion and scare the bejesus outta the intruder/s...
If area is too public... nah not gonna give you ideas...
Best I can to is don’t take a direct path, don’t enter near site, don’t take same path in until you establish several others and can implement a proper rotation, benoculars or something... and be safe
Also don’t leave garbage behind and pick some up
Yep theirs some nasty shit I have known people use like nail boards, fish hook lines, ect. Their not worth the trouble you will get in. If you have a few spots in the same area that full area will be searched by police. If your caught your charged with endangering the public, ect as well as growing. Keep plots to under 10 plants and you will probably just get a caution maybe a small fine. Plant 100 plants at a plot and get yourself a jail sentence. Personally I would go with 10 plots of 10 plant plots everytime. People who show big fields with 100's or 1000's of plant are going to be in big shit if they get caught. Me well I have been caught no criminal record still plenty of plants to harvest and most importantly I am free still. I get a lot of shit for telling people stay safe and don't fill a field its just stupid and showing off. Even got threats to trace my ip address and send people to my house were my kids are and seriously get hurt by a gang of thugs by a canna breeder. Seriously safety first.