I've been botting Sorc Garden on 7 accounts for two months (all signed, same IP), and have only got Jag Rolled on two accounts, and that was today. It happened to many. However this isn't even an issue considering these accounts are so easy to make. I've also been botting four Runecrafters doing natures for about a month now, with no negative results.
If you bot Runecrafting you're golden. You won't get banned because people won't report you. This is because you're always on the move, and there is no sure-fire way to know you're botting.
Use paid bots. All free bots are pretty much crap in my opinion that will get you banned.
In conclusion: Sorceress's Garden and Runecrafting is the way to go. Don't be afraid to bot all signed on one computer, Sorc Garden accounts are ridiculously easy to bot up and Runecrafting is almost guaranteed not to get you banned if you use the Graahk method crafting Natures. Also, do not use free bots.
Pro-tip: When using the nexus client (rsbots.net, rs2botting.com, whatever, they all use it), put all your global settings to the RIGHT, not left. This substantially decreases the amount of CPU being used, and will allow you to run more bots at once. The bot will look laggy but it's running at full speed. You're just decreasing the frequency in which the client feeds back data to you. It's all good

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