Sounds like fun - if you guys work it out and get it set up, I'll try him again. What do you suggest in the meantime, maybe suspending a ball on a string from a branch and having him go up for it? That could be some good preparatory groundwork I think. Maybe Reno (our youngun) would like to try that too.
"Outside of a dog, a book is probably man's best friend; inside of a dog, it's too dark to read."
- Groucho Marx