Ele shaman Fire nova AOE macros?

[topgear]

Flame Shock has a 6sec cooldown (without talents) so against trash mobs 2 shocks equals around 12secs which should approximate the duration of the fight.. Are you using a Magma Totem for AoE?

[LightWrath]

Magma totem is used, not on this macro but on another along with thunderstorm.
Cd for my flame shock is 5 seconds, meaning i can get a flame shock off every 5 seconds with this macro, but well now am thinking of changing this to try and get it so that they are all used when off cooldown, rather then depending on the cooldown of flame shock.

Still for some reason, in many fights am finding that the targets arn't changing, it's just rebuffing the same target and nor changing to target 2, 3, etc. even though they are right next to each other.

THe shammy will target a suitable mob with just the /cast auto attack, dot and nova it, but then it just repeats that on the same target, even though the /targetenemy is used.

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Latest idea to further improve this would be to have fire nova and chain lightnng on a /click in the maco so they are constantly pressed when off CD. rather then waiting the 6 seconds for the macro to be done again.