If the class is is still looking for other options for the nationals, the Torbay Royal Regatta is on from the 25th - 27th August 2018.
From the website it looks like there will be lots of boats racing, including the VX One Nationals and the 29er Class Summer Championships. The 29ers will also be around two days prior to the main regatta and there is some more racing on the Tuesday if another day or two of racing/blasting is required.