What you can do is go into the Settings of the Archeology bot and disable all non-troll sites.
You can't *only* do troll because at some point there won't be any troll sites available anymore. By disabling all non-troll sites in the settings, Archebot will ignore those sites until there are no other sites left. At that point it will do the disabled sites until non-disabled sites appear again.
In the end, though, it will most likely not be much faster then just doing all sites.