I too like the platform that attaches to the tree. Seems every one I've tried that doesn't, the platform has a tendency to wobble when standing. Not only does this make it feel unstable, I think the deer can notice the ladder movement when you stand. Just my personal observations but, I have the best results between 10 and 12 feet up and 20 feet and up. Between 12 and 20 they seem to detect better.