I would suggest using a broad/emerald (e) setup, start at the beginning with the emerald (e) to poison, then switch to broads after which you can finish the. Each kill is worth roughly 20k or so. I myself do 2 kills each run (using prot and RuneScape Gold eagle eyes at times) melee occasionally) and then go home port. recharge, pray using the fally portal bank and come back when I am ready so that the next time spawn.
Hey. Everyone is different. Do you really have a "correct" method to kill something? In my opinion, just strike them with the best weapon and gear, while raising the intensity! But I've not killed one. Make sure to eliminate what's hardest and/or the best way to buy osrs gold thing that irritates you. Why should you keep doing something that is slow?