Too close enconters if you ask me! I got the idea, now it's a bit hard to get it in practice. Your idea is very clever and I think I know what to do now. Good challenge. Can't wait for your next one.
I know what to do now - I am having problens getting me and the boulder synchronized! Then I've got to do it more than ONCE! I WILL do it - just a matter of time. When THAT part is over, the rest should be easy!