I did this a couple of months ago for family and friends that decided to try elemental, but eventually they liked more enhancement and stick with it, with one of my macros of course (link). Basically goes through a rotation and in between few chain lightnings and pop some cooldowns. If you need to aoe just hold a modifier and hit the macro. Lazy macro for you!

Macro might be outdated, please check the forums for up to date macros.

[mod]Fire Nova;reset=9 Call of the Elements,null /castsequence Lightning Bolt /castsequence reset=9 Flame Shock,Unleash Elements,Lava Burst,Earth Shock,Lava Burst /cast Elemental Mastery /use 13 /use 14

Macro Explanation:

4.2 Shaman - Elemental Lazy Macro

UPDATED June 6, 2011: Revised and reworded the code to make it spammable without locking up and compliance with the new Fire Nova spell