Well I didn't see any other threads on the COG 2015 National here in the
Events Calendar section so why not start one.
There is some discussion of it here:
http://www.zggtr.org/index.php?topic=17405.msg212773#msg212773June 15th through the 19th 2015.
Here is the link:
Once there, you'll find other links to Lodging, Registration, Riding, Attractions etc. etc.
Here is the video link:
link to promo video