Probably planet interaction is the only safe thing to do afk, some ones gonna blow u up eventually if not every day, if you are trying to afk mine null sec, unless your corp is gonna baby sit your character for you. 15 seconds is way to much lag time to respond to a threat.
You should try eve echoes it was designed for you to do what it is you are talking about, where eve online is designed to keep you at the computer.
You can even haul afk in that game.