One of many ways to have a winning advantage against other online players is to go to your phone contacts, call Lester and pay him to get off the radar for one minute. Another way to have an advantage against other online players is to be in cover while attacking or being attacked by someone.
A location that you could hide to survive a bounty is under ground in a train station and follow the train tracks. other players will most-likely not know where you really are because the map shows that you are above ground and they will most-likely not check the underground tunnles. Another location you could hide from a player