I did this at TechShop Menlo Park. http://www.techshop.com
Your wooden outboard motor mount will not last very long unless you coat it's surface with fiberglass. This is how:

Step 1: Supplies

Picture of Supplies
Purchase large sheets of fiberglass and some clear resin with catalyst. You will also need a mixing cup, some cheep brushes you will dispose of in the end and and some nitrile gloves. We did this without gloves. Please DO learn from our mistakes!