Hi, I now consider myself an expert on rolling the stratos (centerboard) and righting it again purely in the interests of finding it's limits you understand. But! am I right in thinking there are two tanks that fill with water or one big one?. If it's the former, then this would account for the difficulties I've encountered when trying to right the thing in strong wind. It seems to resist being pushed round into wind as well. Am alone with this thought?