Del C wrote:

At Lasham for the K21 we teach holding the stick about
two-thirds of the way forward for the ground run and
safety climb and then easing back to give the correct
climb angle with the wingtips about 45 degrees to the
....

I consider this mechanical approach completely wrong.

On the ground run, use the stick as needed to keep the glider on the
ground. (This may or may not be 2/3 forward.) (Personally, I start with
the stick fully forward and then ease it slowly back until the glider
begins to fly. I have no idea at which stick position this happens.)

On initial climb, use the stick as needed to do a smooth transition, and
watch your speed.

On climb, use the stick as needed to keep your target speed. (If this
means neutral or at the back stop, so be it.)

Your target speed dictates the climb angle, and this may or may not be
45 dgrees, depending on the winch and the glider and probably a lot of
other things.

If you teach a mechanical apporach, then you are going to be in big
trouble if sometimes you happen to fly at a different location.