Dosu begins by focusing on his water chakra and the moister in the air. He then manipulates it and materializes a wave of water, roughly the same height as him. The wave of water then continues to travel forward towards a large rock. After creating the water, Dosu channels and molds his wind chakra whilst thrusting his hands forward, manipulating the wind currents and releasing a forceful gust of wind that pushes the wave of water, sending it forward at a stronger and faster rate. As it clashes with the stone, it would begin to shatter from the added force.
First question: That's debateable as it's not specifically states, I'd say upto half gamabunta's size or something.
Second question: Personally I'd use my hands to create the surge, thrusting both forward.
The time it would take to create a ball is neglectible unless you only have a split second to defend ofcourse, wind is exhaled quite fast. And yeah, you need to focus on the ball(s) until you have thrown it.
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First, by using your water chakra create wave of water and send it off towards your opponent and then enchance the water by empowering it with a gust of wind. The water is part of this technique thus you won't have to actually use a water technique beforehand.
A pretty neat technique to use in close combat. Charge wind chakra inside your hand and send a punch towards your target's gut(or any body part for that matter, doesn't really matter in the end) and upon making contact release a blast of wind from your hand that sends your opponent flying while dealing blunt force damage. What I personally like about this technique is that you can just say you send a punch to your opponent in one move and if they acknowledge getting hit you throw in this technique already having the punch part covered and not allowing your opponent to metagame knowing you'd use this if you state it before they have acknowledged getting hit, if you get what I mean.
What would be the elemental difference between this water wave and a normal one? Would the wind give it some aid against lightning maybe? Or does it only make it stronger and faster? What I mean is, what sets it apart from another B ranked water wave? Besides being faster? Since the end-result damage would be the same for both techniques. Can I take advantage of the usage of wind some how? As for the rest, I really like this technique, specially because I want to specialize in water. I never would have imagined that I would be learning a water-related technique in the wind-ninjutsu list. Oh, now I thought of something. If my target manages to somehow take care of my water, maybe the wind gust would continue behind it? And taking into account the rank division you've taught me, I might assume that the wave and gust are each C rank in strength?
Dosu leaps to the side and as he lands he begins to sprint towards the nearest tree. As he does so, he pulls back on his right arm as he flexes it and closes his fist. He then thrusts his fist forward, aiming to strike a middle point on the tree's trunk. After making contact, Dosu releases the blast of wind to push the tree backwards out of it's roots.
That seems like a really good usage of the technique. I had a similar idea in my Ninjutsu Training with the translucent string technique, the one that attaches a string to a shuriken to change it's course with the flick of a finger. I mentioned maybe just stating it has a string and then use the actual technique to flick it and maneuver it afterwards so they can't metagame, however Vex told me it was not allowed, that I had to post the technique first. My quoted question and his answer is towards the end of the post I will be linking.
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With that out of the way haha, I really like this technique because it adds a more surprise and striking factor to close combat. You can feint your target or simply do a normal punch and once they counter or try to with normal means, or maybe deadly means, you can release to push them and deal blunt damage. What I did notice though is that you have to be careful where you use this technique because there is no wind coating or anything protecting the user's actual fist, so you can still be harmed depending on what type of surface you punch, like the tree I just did. I actually felt some pain while doing it.