Engineering is almost mandatory for a prot pally. Without it, you have only one way to (non-body) pull - Avenger's Shield. This is great and has a reasonable cooldown, but you'll want to single-stun pull from very far away sometimes, something for which the Goblin Rocket Launcher is perfect for. And the +45 stam when equipped doesn't hurt either.

Helms, helicopters, etc help too.