when I rack up on my element, I put the rack up on the window, now the lower gate. It keeps the bike up out of harms way. If that doesnt really make sense, I'll take a pick next time I rack it.
I learned my lesson one time when I was racked on my element and backing up in a parking lot, I hit a marker sign that was 3-4 feet off the ground. (not paying as much attention as I should have been but I wouldnt have seen the marker anyway) Destroyed my front rim.