Nash Buckingham said "use both eyes God gave you when wingshooting".
Annie Oakley said she was asked that same question (one eye or two in shotgun shooting) perhaps ten - fifty times after every skeet or trap shoot or after her appearances in Buffalo Bill's Wild West Shows, and she firmly believed that two eyes "were best" kept open in shooting clays, live pigeons, or wingshooting.
Mark Arie who was said to be a greater wingshot than Nash, and of course was an Olympic shotgun gold medalist in the 1920 games, felt that "one eye" was best in competion in live pigeon shoots, or in skeet or trap shooting.
Mr. Nash, he had me take out a Mr. Money from England, who was "De' Shooingest Gent'man" I'd ever did meet! ***Check out [Joe Guide YOU TUBE hunting Videos]***