The Scotty Flush Deck Mount 244 can be flush mounted on any flat surface with enough depth clearance and accepts all Scotty post mount rod holders. The bottom of the mount hole is sealed, and the attached cover keeps out splash.
Cut a 1 3/8" hole in the deck to affix the 4" x 2" x 2" mount.
Bolting pattern is 1 5/16" x 3 3/16". Bolts not included.
Apply a bead of silicone sealer under the mount to ensure it's watertight.