Changing Gears - Community Comments Requested!

I'm trying something different this week. I would like to ask all the great pilots who have been reading my blog to help contribute. Below is a list of all the good and bad reasons I can think of that a pilot would change gears while soaring. By change gears I mean, fling more or less aggressively, staying high or pushing low, increasing or decreasing MacCready, keep flying or land. I don't imagine that my list is complete, so I would like you to add a comment below with all the ones I have missed. During the week I'll collect the comments and amend the list with your thoughts then select a few to provide anecdotes for from my own flying or from flights I have read about. If you are feeling ambitious, provide an anecdote as well! Note that there is a list of good reasons, and a list of bad reasons; I'll comment on that later.

Good reasons for changing gears:
The sky ahead is showing:

1. More clouds
2. Fewer clouds
3. No clouds
4. Cloud bases rising
5. Cloud bases lowering
6. Thunderstorms building
7. Thunderstorm blow-off
8. Cloud streeting

The wind is:

1. A greater headwind/tailwind
2. more/less favorable for ridge/wave/thermal-ridge/thermal-wave
3. Showing a gust front

Last thermal was:

1. Weaker than expected
2. Stronger than expected
3. Broken
4. Broken above/below/at altitude x
5. The next thermal is expected to be:
6. Weaker than expected
7. Stronger than expected
8. Broken above/below/at altitude x
9. Unknown

Lift:

1. Hasn’t started yet
2. Is about to stop
3. Has changed, i.e. shear line at end of day, ridge to thermal, thermal to wave, etc.

The sun:

1. Has changed angles, i.e. high to low, east facing to west facing
2. Will/Has become blocked
3. Is about to set

Your altitude is:

1. Too low for comfort
2. Too high to use
3. Above/in/below the working band

The Terrain:

1. Will/Has become unlandable
2. Will/Has changed, i.e. mountains/ plains, grasslands/forest, dry/wet

You are:

1. Lost
2. Tired
3. Daydreaming
4. Nervous
5. Uncomfortable

Other gliders are:

1. Reporting weak/booming lift
2. Appear lower/higher ahead
3. Returning lower/higher
4. Deviating from course
5. On the ground
6. Gaggling
7. Easy to see

Bad reasons for changing gears:

1. Make up lost time
2. Make more distance
3. Fly further/faster than competitor
4. Recover from a mistake
5. Frustration
6. Impatience