Unless I missed it,there are 2 very important question that needed to be asked.
1)are you a user of the Waitemata.
2)What type of vessel do you use.
These are important because you get all sorts responding who may never ever use the harbour and 2 if enough respondents are power vessel owners it would go in their favour to increase speeds, but if the majority were shown to be kayakers/yacht's it could be a different outcome.
Its proberly already set in stone and council just going through the motions.