Cost to earn a glider certificate?

In article "Vaughn Simon" writes:

"Tony Verhulst" wrote in message
...
... your real question (IMHO) should be "what does it cost to participate in
soaring?".

Well said! Since much of soaring is done solo anyhow, and much of your
student flying is also solo, the cost to actually earn your certificate is not
terribly relevant. Flying is flying...certificate or not, and flying is a
wonderful thing.

Vaughn (CFIG)

Much the same was true when I got my power license -- flying is flying.

However, now I wonder about what sort of flights to expect while getting
the rating -- how many useful flights and how many wasted ones? Does it really
take 15 to 20 flights of dual before solo? What is covered in those, and how
can one take control of the process to make it more efficient?

How many more dual before "high solo", and how many more before the check ride?

How many of these flights actually get into lift and give a good learning period,
and how many are just a ride back down from release?

yes, I know, "ask the local group's instructors". I am asking here first so I
am better equipped to evaluate their answers when I do so.


Alan