Here's a list of cab stand ideas that Luxor Cab President John Lazar handed to me.
Trader Joe's : East of 9th St, mid-block Bryant and Brannan.
West Portal Station: Northwest corner of West Portal at Ulloa.
San Francisco Zoo: South side of Sloat at 45th Avenue just east of the Zoo entrance.
UCSF Medical Center: North side of Parnassus in front of 400 Parnassus.
UCSF Medical Center: South side of Parnassus opposite 400 Parnassus.
City College: South side of Judson Avenue, west of the intersection at Gennessee Street.
Geary and Park Presidio: South side of Geary west of Park Presidio.
Geary and Arguello: South side of Geary west of Arguello.
Beach and Hyde: (hey Luxor, this corner already has a cab stand!)
Bay and Powell
Union and Grant
Broadway and Columbus
California and Montgomery: (there's a cab stand here too in front of the Bank Of America Building)
Union and Columbus