has anyone ever rode here http://www.raysmtb.com/index.php i have family in that area. i have ridden there on my b*ke
From my experiences skateparks that are mainly ramp based are not too fun on a unicycle, mainly because we cannot reach the speed needed to clear a gap or get back up a half/quarter pipe 
Im sure this was posted a few years ago. Those pictures look very familiar. The northshore course looks great fun for muni, its not very high though.