Low-altitude flight

I seem to spend a lot of time scratching (due to incompetance), but I
rarely get below 500ft and almost never below 400ft. When scratching below
800ft coordination (yaw string) and airspeed (ASI) are alway high on my
agenda, and the workload goes up.

When mountain flying (much of flight can be within 500ft of surface), and
circling up the side of cliffs, not hitting the mountain and control
responsiveness also become important.

On the rare occasions when I mess up and find myself doing a ground level
turn, I do look down the wing in order to ensure that I dont stick the end
in a tree or the ground, I expect my rudder control and coordination is
maintained due to the many hours of scratching.

When doing some two seater xcountry flying recent, my complaint to all the
P2s was about their coordination.

I must try to work out about pivot heights. My wing always goes backwards.
What is the pivot height for a glider flying a 45 deg banked turn at 55
knots? A formula would be nice.

Rory