How have you not gotten banned? The ban rate with runemate is super high for me atleast IDK why. I log on make an account do tutorial island and kill cows for like an hour. Start tanning with MaxiTanner and in 2 invs im banned.
What you do is you go to karamja with a cash stack and a lobster pot. Fish lobsters pay fare to get back to Port Sarim use deposit box next to the entrana ship people go back to karamha and repeat.