I know this doesn't directly answer your question but I've found free bots are usually all highly detectable. You can pick up a nice premium script for only a few bob and it will be scripted much better. Or you could hunt around for some premium trials for free.
Wrong section, but I use Runemate. I've botted several 99's with it and highly suggest it. I went 10 months botting 24/7 and didn't get banned till yesterday. But thaat was cause I used a agility script that I knew the anti ban was faulty on.
Topbot, I've used it for over a year now and only had 1 account banned which was due to 20+ hour days Very good free scripts but also the premium one's are perfect.