I had some really good luck dealing with local pool guys when I bought my pentair light. I can't suggest a good source for the board but I do suggest calling a couple local installers that deal with pentair. When I bought my light I managed to find an installer that would sell and install the intellibrite 5g for less than I was able to find the light its-self for online. As usual, even the online price beat the local pool store's price.

Unusual situation I thought. Perhaps pentair maintains some kind of special installer pricing? Anyway, it's worth a shot.