For those with access to BBC iplayer, the wonderful Coast series did a programme the other week on the Outer Hebrides which included a good bit on the Iolaire Disaster (a ship bringing surviving soldiers home from WW1 which struck The Beasts of Holm and sunk half a mile off Stornoway harbour, 205 of the 280 soldiers on board drowned) and a wee bit on the guga hunters of Ness. You can see it here.