I'm in SF and there's a nice set of parking spots on the left side of a downhill one-way street. Every bike I see is miraculously parked facing the street, but when I try (busy street) to back into the spot (I make a semi-right turn until I'm somewhat perpendicular to traffic, then try to back into the spot), the bike will not move backward when I pull it with me due to the hill. I end up bailing because it's a busy street. I'm strong enough to move it on flat surfaces, but the hill makes it tough for me to move.