It does annoy me too. I also use my X52 mouse to move it as I throttle up on the runway, you need to enable it in the SST but it does work in AHII or at least it does for me.
I put a small red dot on my screen where the gun sight is, so when I am in an osti, field gun, any aircraft where I'm above the usual gun sight line I can still see the "pipper" so to speak. try it and let me know how it works for you ;

I still use the mouse cursor to mark the range for bad guys spawn in tanks:lol