I just received the call from the organizers of the VFW derby on Chauncey and A-1 in Westborough.
As of today you need a plank to get onto both ponds and there is minimal ice covered with a few inches of water, then another thin layer of ice. Chauncey is approx 1/3 open.
They feel the conditions would be ok (notice the lower case "ok") for Sunday given the forecast, but they are wary of promoting a derby.
Lee