Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
Craig, Teak is always a good choice for marine use, but there are other choices like Ipe (Brazilian Ironwood), or marine plywood. You can find 1/4 sheets of 3/4" marine ply pretty reasonably. Teak & Ipe you can leave untreated and they'll both fade to a nice gray and neither will rot. Marine ply should be varnished to provide UV protection and some resistance to rot, although it's built with waterproof glues. Teak and Ipe can both be varnished as well if you want to keep it looking nice, but there's nothing wrong with the weathered gray.
<font face="Comic Sans MS"><font size="2"><font color="navy">I agree with Frank's post (photo) above having just installed a new motor mount with which has the same material I know I don't have to worry about it deteriorating. Having said that the Catalina Direct listing says this;
<font color="red"><b>"Warning!</b> The use of either a wooden or plastic motor mount board without a stainless steel backing plate could result in the loss of your outboard and/or injury to the operator." </font id="red">
So buy the metal backing plate to go with it.
BTW - I would not use any solid wood as it might (will) split along the grain. If you are going to use wood, use exterior or "marine" plywood of the best quality you can buy and glues or epoxy specifically made for use outside and near water. </font id="navy"></font id="size2"></font id="Comic Sans MS">
I just bought the plastic mount from Catalinadirect, but instead of buying their expensive bracket I got a heavy piece of galvanized steel from my local stove shop and mounted it over the plastic with an undercoat of rustoleum, and will topcoat with same color as the stripe on the boat (blue).
As I recall, a significant design element of CD's stainless plate is a lip that prevents the motor from sliding off the plastic board. Without something like that, I might suggest using a spade bit to drill some shallow indents into the plastic for the engine clamps.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.