well, really if the dog is heeling and watching you, they should not take that jump unless you tell them to- either verbally or with a send cue, walking past it does not necessarily indicate that they should take the jump. Cran's first course at the RNC, the jump was right in front of him and we were turning right and not taking the jump then. I haven't watched very many of the other runs in that ring so I don't know if dogs did take that jump. He sure looked at it though....
so this is
the video where he got frustrated and took the jump- it really wasn't in his line- I found the post about the trial but I never uploaded the videos... bad poster....
The one that Dixie had- I told her heel so she looked at me and did not take the jump. I don't think I have video of that one- it was 3 or 4 years ago.
Agility is different and they know the difference- you aren't running in rally which does get the dog more excited. You use more body language in agility, rally is mostly all forward motion except for the backup sign.