Originally Posted by pilotmike
Now, I don't wish to speculate, however if Ladbrokes offered even money on gaining 500' late in a tight circuit when blatting rather fast, on being down to the pilot deliberately trading speed for height (to get below gear or flap limiting speeds possibly, to get the gear or flaps down), or a 'huge thermal', I'd put my tenner on the stick back to slow down every time. Just saying...
Whilst I might quibble with the certainty and tone of your previous paragraph, I don't particularly disagree with the above
My original comment (previous to DaveReid's plot) was simply about the instability of the airmass at the end of last week, which I'm sure you agree with if you flew your sailplane in it.