Well, I sent this, FWIW...
I've learned you are considering removing the disc golf course at Mt. Holiday in favor of accommodating new activities, including ziplining.
As avid disc golf enthusiasts, myself, familiy and friends frequently take disc golf road trips, selecting destinations based on the number of high quality courses in the area. Memorial Day 2014, my son and I visited the course at Mt. Holiday, having selected Traverse City as a destinaton primarily because of Mt Holiday and Hickory Hills, and and really enjoyed out stay. I have to say the course's closure would negatively affect my decision to return to the area for subsequent vacations, as I would favor destinations with more than one high quality course in the immediate area.
I understand the ever increasing need to maximize profit and develop additional revenue streams, and how ziplining can figure into that. However, I don't think the two activities are mutually exvclusive, and instituting a pay to play can help generate a DG based revenue stream. Most players I know would gladly be willing to pay to play a course as phenomenal as Mt. Holiday.
North Georgia Canopy Tours, outside Atlanta, GA, successfully accomodates ziplining, disc golf, camping and other activities in a purely commercial entertainment operation. I stayed there a couple of years ago and had a wonderful time. The combination of activities creates a richer, and more fun-filled experience than either activity does by on it's own. I urge you to contact the people who run to see what they have to say about it.
http://www.northgeorgiacanopytours.com/
770-869-7272
I hope you'll seriously consider ways for both activities to coexist on the same property, rather than viewing them as mutually exclussive.
Sincerely,
Dwayne Kay
PDGA# 48454