Can normal people recognize a plant?

Use silk flowers ( realistic looking ones )

Spray plants with Neem...the smell of Neem overpowers all but the stinkiest.

Neem can be use during flowering up until the last 2 weeks before harvest without any funky left over taste.

The thing is if even I, or many of the other growers here walked by a weed plant camouflaged by other plants, 70% of us wouldn't notice it because its not something you expect and its not something the eye naturally looks for. BUT when its flowering, about 98% of us (and the general pot smoking community) would spot it (and probably take some free samples).

In response to the original post, I prefer high yield over high risk. You have to put in the hiking time bro. Find a location that fits your needs: secluded, south facing, water source close by, and an area is easy to get to in the middle of the night.
You could lose your house if you were to get in trouble. To much risk. Take a hike and enjoy nature.