Gybing itself is quite complicated even in ideal conditions.
But add to those:
Low wind: around 10kn or less
not planing
small board, almost sinker
and gybing becomes real nightmare.......

Does anybody has any tips for slow speed gybing, how to keep balance, while there is almost nothing to keep your sail, board hard to balance?
If the trick is to make it fast or slow?
Keep the center of weight close to mast base or rather sink the end?
Flip sail quickly or slowly?
To illustrate let's imagine: board 92-94L, Sailor 88kg, sail 7.8 m2, the wind just enough to cruise not sink,
but not enough to waterstart....and you never know what in the water beneath ( Shark ??? actually you know there are plenty but supposedly do not eta windsurfers often)