---

I am staying out of the pro/con debate.

To mount it on the inside wall of the splashwell:

-Tape off the area with painters tape.
-Use the filter mounting bracket as a template and trace the holes.
-Drill two pilot holes slightly smaller than the screw size. Test the drill size in a scrap of wood, the test the screw. It should be a snug fit.
-Remove tape.
-Bevel the edges of the hole slightly [just the gelcoat layer (1/8")]
-Apply a small dab of marine sealant (NOT adhesive) into the hole and the threads of the screw. Tighten screws till snug.