f2p botting is almost a guaranteed ban...
Trout/salmon fishing barbarian village in w1. I did this 24/7 on my main for a week while waiting for members. I also saw another person botting there for well over a week straight almost and no bans.
The only thing that is good to bot in f2p has to be trout and salmon at barb village. Try that out untill you can renew your membership.
-Vic

