My old apartment sink clogged every other week. I finally bought a $15 plastic drain snake from the hardware store, and it cleared hair clogs in about ten minutes. Kevinr23, your buddy's story is exactly why I didn't try anything more complicated. Sometimes the simple tool is all you need before it becomes a real mess.

Rocky Point trailhead has a dozen spots and rarely fills up except on weekends. Could be your neighbor is just avoiding street parking restrictions in your neighborhood.