There should be the feather flying plugin. I was on a server with it but i dont remember the plugin name and i dont have a link.
What do I think of skylands? Well not much, I can tell you that it's no that secure as it should be for griefing. I got griefed like 4 times and one time, our hole village was almost gone. Even if it was rollbacked, I am still considering that some users didin't read the rules about the Skylands or simply don't want to respect them...
