Pirker Final Glide Theory

At 10:14 12 February 2013, Naviter Info wrote:
When you're doing Auto MC please mind the MC
theory:

If you hit sink on the final glide the required MC
value will go down.
Acco=
rding to AutoMC you would be advised to fly slower.
**Slower through
sink**=
??

I don't quite follow this.

Surely the required McCready (McReady?) setting is a
function of height, wind and distance to run.

So if you hit sink and lose altitude of course your
required McCready setting will go down. But your
speed at that setting will still be what is appropriate
for that setting in that amount of sink.

You could of course keep your nerve and leave the
McCready setting where it is- if you expect to go
through lift later this is usually OK- it's a judgement
call. If you do this and don't go through any lift later
you're in a field.

The only way to avoid having to slow down at all is
not to fly through sink.