I've play Water Elementalist for a total Full Year since 2005 until now. This is the best Water Elite Spell. No doubt at all! Extremely low energy cost, very fast recharge and fast casting time. GW tone up Water Trident's dmg ever since Faction comes out! It now does 74 dmg at Water Magic 16!
You can't compare Water Trident to Gale because they serve totally different functions!! Water Trident cost no exhuastion, so you can spam it! And most imporant thing is... Water mage spells like Frozen Burst, Deep Freeze, Ice Spike... they all do cold damage + snare effect, so it is very easy to slow your enemies movement and knock it down by Water Trident. GW design this elite spell to combine with your other water snare effect spells. Both for Pve and Pvp *Water Spike*

!! If you spam Water Tridents, you have both damage and the knock down effect. *Also good for any foe who try to flee from your maelstrom!!* I've tried numberous of PvP and GvG and WT is a must for all Water Eles.