Gulbon
Legend
You need a friend or second account. One invites the other to party, then you proceed to do quests. When you encounter a quest requiring to kill for example 10 wolfs you die and your partner kills all 10 wolfs, THEN you resurrect. That way you avoid tons of exp from mobs and will leave the isle on late lvl 9 (if done perfectly) or early - mid lvl 10 (if you were alive during mob kills) or lvl 11 if you killed mobs.
Level 9 is advised because you need to do 2 quests for amazing rewards
Bring Me Kel'gash's Head! - Quest - World of Warcraft gives a really good weapon, stands over all weapons available for that leve
Wanted: Knucklerot and Luzran - Quest - World of Warcraft Gives an extremely good ring
You don't even need a second party member to get a level 10 Goblin. I easily do it solo.
What I do is just do quests, never kill mobs unless I have to, and if I kill mobs I target the lowest level of mobs. I'll even corpsehop if I have to. It gets you out at roughly level 10 1/2.