So, when I built my Wood Duck 12 in December, I decided to put an epoxy-graphite coating on the bottom. Two coats, as a matter of fact.
I have taken DAFFY DUCK out several dozen times and had my share of groundings and beachings. Until yesterday, the bottom did not show ANY signs of "bottom" contact. Yesterday, I was paddling in very murky water and ran UP on rocks just under water, so hard, I stuck & had to get out to refloat again. The sound of rocks against hull made my heart stop... Oh oh... I kept checking the bilge for seeping water but none ever showed up.
Then, after the day, we hauled out & I checked the bottom to see how deep the iceburg has ground into my hull (Oh wait, wrong vessel...) What I saw was what looked like a light white chalk line in the black bottom. Not even the slightest indentation. I'm sold on graphite bottoms!!!! If you are trying to decide to coat or not to coat, I highly suggest coating.
Whoo Hoo for DAFFY's bottom !!!! ~BRUCE~