Follow up video of M+ tutorial to show how you can play resto shaman in high keys. Running with Monk tank & Shaman healer making this a very challenging and fun dungeon. Sorry about 720P - PC hates me ATM.
Hardest fight of this dungeon for a Shaman healer is Cragmaw - I didnt use any cooldowns because I thought it was going to be harder at the end and was saving them for my team (chain heal only hits 4). As was discussed in the tutorial - you must plan ahead in this dungeon as a shammy or you will wipe on anything above +18 really. The use of healing rain and unbuffed healing surge is generally used on the bosses to burn mana for high tides if anyone was wondering.
Enjoy - questions or comments always appreciated below - good or bad.