[URL=http://s27.photobucket.com/user/kernaghan1/media/DSCN0775_zps1obwxsv9.jpg.html][/URL] Hi Here is one I made earlier, not fitted yet but was planning to secure a metal plate with studs to the roof then attach mast with wing nuts so it becomes removable. Made up the shape, drew some nice curves on a piece of mdf as a template. The wings are reinforced with stainless rods. May alter slightly if I decide to fit a light. Paddy