This variation of Gust of Wind doesn't require continuous concentration, but doesn't allow changing the wind after it's been cast.

Control (Wind, Occasional) 3 [149] 
    Natural Phenomena [+100%] 
    Persistent [+40%] 
    Ranged [+40%] 
    Extended Duration (x1000) [+120%] 
        Applies to Persistent 
    Based on Activation Roll [+5%] 
    Reduced Duration (x1/60) [-35%] 
    Magical [-10%] 
    Spell Components [-30%] 
        Must say "wind" in Latin 
        Must gesture with hands 
        Must wave a hand fan ($10, 0.25 lb.) 
Levels 2-10 [297/446/594/743/891/1040/1188/1337/1485] 
    Increase Control by 3 levels [+45 base]