What's with the one/three advantages and disadvantages >_>
For the first technique, the opponent can make use of the sound of the water clone going into the water so it wouldn't much of a sneak attack unless you make some sound while that is happening.
For the second technique, yes, the punches are the initiative of this technique so in case the punches fail, the entire technique fails.
(Suiton: Setsuna Mizu no Jutsu) – Water Release: Instant Water Technique
Rank: C
Type: Supplementary
Range: Short – Long
Chakra cost: 15
Damage points: N/A
Description: Tobirama using his water mastery will jets towards his opponent at a high rate of speed. Without moving his feet, water forms under them, as if he is skiing across a body of water. (The speed in which this technique uses can be followed by normal sight)
Note: Can only be used by Tobirama biographies.
( Suiton: Mizu Hashira Suiryoku no Jutsu ) - Water Release: Water Pillar Thrust
Rank: C
Type: Supplementary
Range: Short - Mid
Chakra cost: 15
Damage points: N/A
Description: The user will manipulate their chakra and then they create water to rise up from the ground beneath the target lifting them into the air.