Googled a set of instructions on building a hot wire foam cutter and I couldn't just let it go to waste! We started with a 1/2" platform of Baltic Birch that gets epoxy coated (X2). The base of the island gets 'pulled' over the ply and a styrofoam mold. Once the epoxy cures we can remove the styro and put in reinforcement and attachment points.
I don't know why I like them so much but I truely do covet winch islands