If the pump is leaking most anywhere, the drip will come from the bottom. The most common source of a leaking pump would be the shaft seal. Have you been using ATF in the Power Steering system? If so, modern ATF is not healthy for the seals in your Power Steering system.
If it is indeed the seal, it will usually sling fluid all around and will show a "stripe" of fluid inside the hood.
If it is not slinging fluid, then wash the area thoroughly at the coin op car wash, then start watching closely to find the leak.