Some of the stuff that is blocked off seems a bit rediculous to me. There are certainly some sections that make sense to block from a liability point of view, but others points should be open. Last time I was there, one section of blocked track was a fairly small drop to a nice transition with a long, straight, not too steep run out. However, the jump which follows which is half way between a camel and a double is open. Yet it has a lot more potential to go horribly wrong if it isn't landed cleanly. Also, blocking the drop prevents riders getting enough speed to clear the double. The idea might be that it will deter riders from doing the double, but that sounds like a strange way to do it to me. At one point i think the drop had a nasty kick on it but since then it has been smoothed out.
Similairly, other features that are blocked are no more dangerous than features found in other legal downhill trails I have been to.
Anyone know the selection criteria behind the various sections that are blocked?