In reply to chriskinvig:
The rockfax guide has decent details of the approach. It's possible to set up an abseil on the right hand end of the wall parallel to the fence before walking across to the base of most of the routes. The routes around blue sky definitely need the right tide to access them, not sure about the rest of the crag.
Edit: Definitely don't use the fence posts in any of your anchors, there's plenty of gear at the top of the crag which can be used instead.
Post edited at 15:19