Would there be a point to listing weights in this show? Is anyone actually going to say if their rabbit is overweight? It seems like there's no way of checking if the weight listed is accurate so I don't really see a point in even putting weights down. There are a lot of other potential DQ's that would be overlooked by the nature of this type of "show" anyway*, so in my opinion weights shouldn't really be an issue.
*Example: I might have a Dutch with a split stop on one foot (a DQ). Solution: only use a photo of the rabbit's "good" side where you can't see the split stop. Now I hope no one actually DOES that, but it's definitely a possibility.