Thats not where you lure them. There is a spot where you dont get attacked. You basically stand at the side of the wedge of rock, rather than behind it. There are no spawns that can attack you here. Also with prayer renewals and flasks, you can effectively stay as long as you like. I did a 6+ hour trip and used only 2 flasks of prayer renewal (which is why you take a prayer boosting set as well). In addition, the +1 magic attack from the fury over an ASN isn't worth the loss of 15% damage even against a single lobster, bearing in mind the rock lobsters are extremely weak to magic attacks. http://puu.sh/jdZ0 If the video shows you standing at the blue spot to attack the lobsters, you want to stand in the red spot.