Lifeboat
As to where you could get it from. Cornwall model boats sell a good selection of wood for building or decking. including a lot of nice exotic timbers which will give lovely decking patterns. As to what. I would use 1/8th inch or 1/4 inch square for the stringers in spruce. Hope that helps. Kindest wishes, Dave W 😊
Keep it shiny side up, and rubber side down,
slowing your pace when riding through town