A.

How to blur the water
Before (Clear)
After (Blur)
 
 
a. Decrease the value of Above Surface Strength.
b. Increase the value of Refraction Blur.

B.

Quickly duplicate props by using Hot Key
a. Click on a prop.
b. Select Move or Rotate.
C. Press Ctrl and drag it to move or rotate using mouse.
 
 
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