I mow a 10 acre cemetery, 5 acres at our Nature Center, and 6 miles of trails. I use exmark 27hp, 60" deck. There is a newer accessory for the exmark called an operator controlled discharge. This looks helpful for blocking off discharge when facing stones, then opening back up when not while mowing. I was wondering if anyone had used this accessory and what you thought of it, if it held up to abuse.