Heh I've never been caught and want to avoid being caught, so I brainstormed a good system.
1. Dont use a backback. use a Messenger Bag
2. If you want to sneakily carry paint, use pringles containers, and keep the freshness seal on the cover incase a pig or someone looks through the cover.
3. Dont wear black. Wear a different color. I have a brown shirt thats impossible to see at night.
4. If you dont have a car and have a bike, then still dont roll with a bike unless you know what youre doing. (bikes cant jump fences and hiding is harder.
5. Observe your sorroundings. If you see someone coming or peeping at you, or a car coming, book it to the shadows until its clear, then return to your tag
6. Pack a magazine and put small stencils in it.
More to come.. post your sneaky ways