Go with the spider wire, Less diameter, more strength. Like Hogans' advessary Klink would say head' s will roll. Also if you go wityh the roofers don' t get them too long as they won' t stand upright, they' ll just lay there. 1 1/4' s should be about right, wouldn' t go longer than 1 1/2 . Don' t put them through any boards or any thing other wise it' ll look premeditated. Maybe use some rusty ones, they' ll be camoflaged and you can say they' ve been there for years.