What to boat looks like when flipped. We have done lots of sanding as well. Most of the corners have been rounded. That took at least 3 sanding belts of our sander and a whopping two sharpenings of the hand plane. Lots of screws had to be removed, but only temporarly. We will put them back later. That is the life of a boatbuilder. Put screws in, take them out later. Put epoxy fillets on the boat and then sand them later.