25 =========== Bill Whelan *AT* Frederick MD
used/looked at rarely

45 =========== Milton Hare *AT* Williams, CA
BL Top and BL Max Up/Down are my most used parameters.

50 =========== ---------- *AT* Van Sant Airport, Erwinna, PA
So far this year, can soar to this height on most days.

62 =========== john cochrane *AT* chicago glider IL
For our flying (flatland thermal) this is by far the most useful number. Despite HCRIT theory, we seem to get to to BL top pretty accurately. Stregth, range etc. all correlate well with BL top

90 =========== ---------- *AT* Ephrata, WA
Still not sure how to handle a big (3000 ft or more) altitude split betw Hcrit and BL top.

101 =========== ---------- *AT* Ellenville, NY
This seems to be a better indication of cloudbase than the cloudbase prediction in New England.

108 =========== ---------- *AT* Santa Barbara, CA
Very important

137 =========== Ramy *AT* Yanetz
Most important

158 =========== ---------- *AT* 3M5 Al
I go by the local sounding and such I do forge my opinion about the top of lift.