I don't worry about loose lips, obvious signs of growing, mail order seeds or any of that stuff, but accept the fact that you can still get caught. I had a drier fire a while back and ended up with a dozen firemen in my laundry room....along with a shelf holding 25+ clones. They knocked over the rack holding my clones, stepped all over them and never noticed, thankfully. My flower room was literaly on the other side of the door, odor control is priceless.
There's always that little thing, the unexpected, the never considered, that will jump up and bite you on the backside. You can't eliminate risk of discovery, the best you can do is minimize your legal exposure. Know the laws of your state, possible punishments, and make a logical informed decision.
Untill all states are legal we must stay under the radar............
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