My opinion is that it's pretty much same do you run 1 or 3 bot from same IP, there is allways a risk to get banned. With different IP's and another cover stuff you could perhaps save 1-2 of the 3 bots if one of them gets caught. With same IP you just loose them all at once. But You are propably doing the same stuff with all of the 3, so they propably get caught from same reasons, if you get banned and so anykind of hiding is useless...