3M 5200 was applied to the plywood base, as well as to the bottom of each plank. This operation was done in one day for the entire boat bottom. 12 hour of hard work with 3 of us. About 2500 screws were countersunk and set in the planks. After glueing, the entire boat was sprayed with water, covered with plastic, and kept wet for about 48 hours to help swell the planks and activate the glue...