You can calculate righting moment of the bait. Google to find method.
I am unfamiliar with the boat, but very few keelboats have positive floatation, they'll sink pretty fast once they fill with water.
Are you sailing with a big 150% foresail ? You might want to try to use a 95% jib in windy conditions.
Also, study sail trimming techniques to depower the sails ( espeicllynthe main )