The 3rd link, hydraulic, I just purchased is worth gold. It made the landplane work another 1000% more efficient! As a sales tool to others, you could easily convince the buyers of the land plane that the third link will double their use of the land plane and make up the $300 in efficiency in a day. For 30 years I have used my dad’s 10′ John Deere disk to work up areas to landscape. With the Land Plane I am able to skip that step in most cases. Than Land Plane great on its own but with a 3rd link is an amazing piece of equipment.