I need to know the ball size I need to tow a 2014 quicksilver vrv 8x30 toy hauler. A buddy has asked me to move his toy hauler that he had the dealer deliver to a campground. He has never towed it and has no idea what size the needed ball is. The is currently in a campground that has been sold to a developer and it needs to be moved this weekend. Any help is greatly appreciated.