OK, have been trying to think of what to add to the SUAV guide. It is something you just need to practice at in the same way with flying jets.
Having been through a couple of new mouses (that is the plural of computer mouse apparently) the last few weeks the best advice I can give is have a low dpi setting on your mouse. Having it set to high may be OK for general use in BF but it did make the SUAV less controllable. A lower setting make it possible to do smoother turns which helps a lot and seems to fit with the flight characteristics.