(Valkyrie) Step one: basic shelf with cut-outs for Wallas tank and through-hull hoses. Shelf is secured to oak blocks attached to bulkheads with screws and West System epoxy. Fiddle is 3" tall,1/4 inch thick. Fiddle is also reinforced for sturdiness by a 1"x 1" piece of oak that is attached by glue and screws.