Recent experience with Coach-net. Hydraulics failed in campground just outside Grand Canyon South Entrance. Sunday morning! Could not retract 2 slides or store jacks. With in 15 minutes of my call a tech called me and walked me through 30 minutes of attempts to locate and resolve the problem which failed through no fault of the tech. He promised to get a mobile tech out to us. I assumed it would be hours so I booked another night in the campground. Within the hour, as promised, Randall arrived and spent about an hour working on the system. It was clear we would not be able to fix it altogether,  but he showed me a workaround that has kept us on the road happy until I get someplace to have an RVIA Certified Hydraulic tech work on it. Lost time actually none as we toured another part of the park we had thought to miss.