Yah I use 'minimise + ontop'
It works in the sense it minimises the application after you solve a captcha, and then sets activity back to the previous application used prior to jCatGUI coming to the foreground. I can then type a few characters of text in say opera (this <textarea>), then jCatGUI activates itself (still minimised) after I assume jCatGUI updates credits/timer. In the Taskbar it shows jCatGUI selected. This is the part that's annoying.
If you'd like to see this in action I can show you via teamviewer, jump on our
IRC channel