recently i played a bit more arma and noticed that some servers have those smoke grenades for underbarrel launchers.
further i notcied that they are just bouncing to random directions after they hit the ground the first time. this make them (in my opinion) useless as you can't smoke what you would like.
i kind of the understand behavior but why not making the granades less bouncy and maybe heavier so they land at ca. 50m if the launcher is set to 50m, as the explosive ones do.

(there should be a video link under Additional Information)