The new hull covered with Kevlar instead of glass. The final weight is 16.8 lbs. I will be adding some . I expect about another lb. If I had used 2 lb foam it would be over 27 lbs and I would be struggling to make weight . I am sure to breeze in under 304 lbs .That is max weight for this seaplane to qualify as a 103 -7 compliant.