Two hardwood trees with a minimum of 12 inches in diameter and a minimum of 12 feet apart are needed. You can also set up 1 post mount if you only have 1 tree available. Appropriate hardware like 2 eye screws with hooks, or tree straps and S hooks need to be used for support and attachment to trees. Chains and S-hooks are recommended but may not be necessary, if you are limited in space between the 2 mount points. If your hammock is too tight it will make the hammock unstable and will cause flipping. The middle of the hammock at its lowest point should be between 8 inches - 3 feet from the ground. With use, your hammock might stretch and may need further adjusting.