EarthN- To get to Greyhound Rock from SC.... take hwy 1 north for about, umm... 10 miles (im a bit fuzzy on the exact distance). It is a Park, so there will be signs for Grehound Rouck State Beach or Park, etc... and a large parking lot. Whats different here is that the road and parking lot are about 500 feet above the ocean.... Park and walk down lots of stairs and your there. I've seen people kayak surfing there before.... when i went all the little rock clusters in the water made me kinda nervous.
If my beta doesnt work, just about anyone in SC will be able to give you directions.... drive North on 1...cant miss it.
and to above poster, good call on boof.com. Its the Cali equivalent of this site. Also check out www.caliproduct.com
they have a forum and some sweet Cali pics etc...