I asked Joerg Ewald:

On Sunday at the Santa Cruz Flats Race in Casa Grande, Arizona the task
committee called a task with a 13 kilometer goal cylinder. The idea was to make
it safer to land on the east side of the Francisco Grande hotel. There were a
lot of easier ways to make this happen, but that's what we were stuck with.

I set up the task on my Flytec 6030 and Volirium P1. On the P1 I didn't notice
that the goal was defaulted to a goal line and not a cylinder so I made a 13 km
goal line not a 13 km radius goal cylinder. I have learned from that experience.
The P1 always optimizes so I had assumed that it would optimize to the goal
cylinder.

I didn't optimize the task on the Flyec 6030. Because of the way the task was
set up the difference between going to the optimized points and heading toward
the center of the turnpoints was very small. Besides the P1 optimized
automatically.

After I made the second (and last) turnpoint, both instruments said I had 30.9
km to goal. I knew it was only 17 kilometers to goal. I was climbing and
wondering just what to make of what I saw on my instruments.

While on glide I noticed that "A BG Goal" was minus 1,000'.
My "Alt a WP" was plus 1,000'. My "L/D Goal" was
48. 

I assumed that "A BG Goal" was using the waypoint at the center of the 13 km
radius goal cylinder to display the altitude I was below the best glide line to
the center waypoint not to the edge of the cylinder.

I assumed that the "L/D Goal" was also using the same waypoint at the center.

I assumed that the "Alt a WP" was using a point on the edge of the goal
cylinder.

Was I correct in those assumptions?

Would the values displayed have been different if I had set the task as
optimized, i.e. would they have all used an optimized point on the edge of the
goal cylinder?

I was able to make goal just gliding into goal.

https://ozreport.com/23.185#3

Steve Kroop ran a series of tests with the Flytec 6030 simulator (built into the
6030) and concluded that "A BG Goal" and "Alt a WP" were giving almost the same
values unlike what I saw.

Joerge responded:

The 6030’s calculations (distance, required glide, altitude at
goal etc.) depend on whether or not you have it optimize the competition route.
If you use the original, non-optimized mode, it will do all those calculations
going through the cylinder centers, so the information will be pretty pointless
with big cylinders.

If you use the optimized mode, the calculations use the “optimized waypoints” to
calculate how much further you have to go – the points on the cylinder that give
you the shortest path to goal.

I personally do not see any benefit from flying a competition task with the 6030
in non-optimized mode.

I await a little more clarification about how I could get the
values that I did.