Home - Shamrock Rentals, Welcome to Shamrock Rentals, a Lake Vermilion Resort! Shamrock Rentals is a Minnesota resort located on Lake Vermilion in Blackduck Bay that offers three fully modern housekeeping cabins along with a full service marina, now operating as Shamrock Landing. Shamrock’s cabins offer all the conveniences of home, including DirecTV satellite TV and wireless internet access. Need ….