Just read on another forum that there are now built-in proxies in Rank Tracker? Strange thing, I haven't heard about it before, cause working around Google bans in Rank Tracker is a real PITA...
However, I just tested the new feature and it seems that it really works - not a single CAPTCHA spit out!
To enable it, click Preferences - Search Safety Settings and tick (Beta) Use built-in proxies.
Let me know if it does the same for you, since I wonder if I could stop paying for my proxies