replying to utsuxs, Willard F Ottosen wrote: Hidden hangers attach to the front lip of the gutter. The weight of snow always drips the gutter away from front lip. I've been in gutter business for
30 years and have seen it over and over. They make an aluminum very aggressive ring shank spike that holds well in the snow with metal roofs. Most gutter people only use the hidden hangers because it is easier