I work close by and found this spot through this site, now I've been going here maybe 2-4 times per week for a lunch run and it's pretty fun. Not had the seagulls drop on me yet, but it goes that every time I'm there some tourist will be snapping a few pictures or wanting to chat.
It's definitely a fun spot, the water and sand make for some different challenges. It's a pretty long wall and can take over 30 minutes from side to side, I've done it once in about 20-25 minutes when I was cruising and other times it's been almost 45 when I get much higher on the wall and take my time.
Staying low you have much less for your foot holds, plus your battling rocks that seem to be much more slippery. If you get up higher you have more to work with on footholds but the trade off is the wall gets much taller in the center.
To get to the spot, follow prospect down to the split right by Girard and make a right going toward the water, make the first left onto Coast and follwo that down until it meets up with the main road running along the water. Once Coast hits the main street by the water you should see the top of the wall.