Okay, see how this works... I've written a very simple script in the AutoHotkey language. It checks every 0.6 seconds to see if the pointer is the text "i-beam" type (i.e. you're pointing at editable text), and if so then FitalyMainWindow is told to move to close to the text insertion point. In other words, you tap in text and Fitaly jumps to where you tapped.
This is a prototype, which doesn't handle Fitaly being minimised, doesn't minimise it for you, doesn't handle multiple Fitaly sessions, and doesn't ensure Fitaly isn't placed half off the screen. Features can be added if anyone wants them and if I feel like it. It does work with either size of Fitaly; I haven't seen the small one for ages - what a drag!
Fitaflea 0.21.exe and Fitaflea 0.21.ahk source code are at the following URL, if it works. But currently I have large Fitaly parked on a horizontal taskbar at bottom (see picture, if *that* works) or top of the screen.