The quality of this Ninja course is truly impressive. The stability of the ropes, wood, and connections is remarkable. As I already have a slide set in my yard, attaching the Ninja course to it was really easy. Although I haven't tried installing it on a tree yet, it seems quite straightforward with the provided rope and connections. Moreover, even if there aren't two available trees in the vicinity, the course can still be successfully set up using just one tree with ropes and connections provided. I appreciate the flexibility and various options that this course offers. Most importantly, my child is thoroughly enjoying climbing the ladder and hanging from the rings.