Yeah I'd recommend a random interval mouseclicker at best. Ghost-mouse programs are so high-risk it isn't even worth it.
Would this interval clicker be able to right click and thieve from a chest?
I'm just looking for something to earn basic money on Deadman mode, lol.
Should be able to set it to right click then left click, wouldn't be too hard, especially if it's just clicking on one spot at a time over and over.
Having it doing it in intervals will save your ass in the long run as JaGeX's main way of catching bots are through their clicking methods.