Hire a qualified professional or follow local laws and safety standards
Choose two healthy, mature trees with strong trunks and stable root systems
Confirm the trees are properly spaced and the route is clear of obstacles
Inspect both trees for rot, cracks, disease, or structural weakness
Measure the span, slope, and required clearance
Select zipline-rated cable, hardware, trolley, harness, and braking system
Use proper tree protection to avoid damaging the bark and cambium
Install anchor points with professional-grade hardware rated for the load
Tension the cable according to manufacturer specifications
Test the line with appropriate weights before any person rides
Install a reliable braking system and backup safety measures
Check all connections, clamps, and fasteners before each use
Wear a certified helmet and harness when riding
Keep the landing area clear and supervised
Reinspect the trees, cable, and hardware regularly
Stop using the zipline immediately if any damage or instability is found