An interesting discussion. As a long time user and proponent of the
TLAR method, I had not thought much about what the actual angles were.

Really easy to check with SeeYou and an IGC flight log. When I checked
my last 2 flights I found a pretty consistent 1km offset, with
altitude usually around 600 ft (opposite touchdown point, not pattern
entry). This is a 5:1 slope, about 12 deg. This is in a Ventus C.

Bob

On Sun, 12 Jul 2015 11:18:59 -0700 (PDT), wrote:

text deleted...

Just for curiosity, I looked at the recent landings at Hobbs of one of the competitors.
When he passed the touchdown spot on downwind on July 1, he was roughly 450'
?above it and 1900' away. This is a ratio of 1:4, not 1:1. The next day his numbers
were roughly 700' and 2200', for a ratio of 1:3.

I doubt if anyone can find many IGC files with numbers of 600' and 600'.