Dont wear gear for prayer bonus. You won't stay there long enough to feel the effect. I personally like using whip and defender at 99/99, but anything less use a godsword. Bandos tassets, bandos chestplate and barrows helm (not dha) is best setup. Basically all round range defence bonus and offensive bonus is best. Use rocktails / super restores to heal and pray. While fighting Grarr, use the southern wall to heal. The trick is, to hug the wall, and get him to hug it too. when you need to heal, take about 5 steps in to him. he will then walk backwards, but not be able to attack you. So, when you fall below 70 hp, click 5 steps in front of you, eat rocktail, click another 5 steps, eat rocktail and restart attacking. if done right, you will be 110 hp (+10 whatever your hp level is) and he would of not attacked you while you are eating. Then minions, pray mage, kill mage, pray range, kill range, pray melee, kill melee. if you feel you have taken too long to kill the minions, lure the melee back to south wall with protect melee on and pot up as necessary. this way you will avoid being jumped by grarr. sorry for the essay but i hope this has helped. good luck with hilting! :D