http://sonomawings.com/site-guides/hull-mountain/. Hull Mountain is a popular hang gliding site, but is largely unregulated and can be flown by PG. HOWEVER, the glide out is a long >6:1, so mostly flown by hang gliders. Be careful flying a PG in strong wind. The LZ is located on the side of Lake Pillsbury, with a few campgrounds. The road to launch can be 4WD, if the rains/winter has been rough, but often a high-clearance 2WD will make it to the top.