As of current builds, the plugin supports a new and more easy way of making ladders.
You now need only one region ot make a ladder, or you can even have the plugin make a ladder out of any visual object or collider.
The plugin will automatically calculate all the needed info for you. So no more manually calculating that dreaded climbheight value!
See http://alcugs.almlys.org/wiki/index.php/AgeLadders for more information.