Joined: Jan 2009
Posts: 44,180
Likes: 6,418
From: New York, NY, and High Falls, NY, USA
Bikes: 1962 Rudge Sports, 1971 Raleigh Super Course, 1971 Raleigh Pro Track, 1974 Raleigh International, 1975 Viscount Fixie, 1982 McLean, 1996 Lemond (Ti), 2002 Burley Zydeco tandem
I just aim it while I'm riding. Raise the beam as high as possible without going into others' eyes. So maybe the top of the beam should hit the ground 50 feet ahead.