Log 10 water release viscosity
Ok, this will be a quick and easy one that combines the use of nature transformation and chakra control and its use in adhesion. A liquid's viscosity is the cohesive forces / adhesive force between unbounded molecules. All liquids have viscosity, one of the most memorable to me is the pitch drop.
A famous experiment, a scientist filled a glass funnel inside A glass dome with a Pitch and let time work. Over the past 100 years at a rate of about 1 drop a decade this pitch has been slowly draining. Pitch has a viscosity of 20 billion times that of water.
Glass I am not sure I can call even a liquid and I can't even believe any amount of chakra could apply the level of adhesive to water to reach the level of viscosity. If water has a viscosity of 1 mPa*s then glass is at 10^22 Pa*s
How viscosity can be useful in jutsus is by hardening a liquid to be indistinguishable from a solid. It can be used to trap an enemy and if you can become proficient enough you can manipulate liquids to act as non-Newtonian fluids.
A non-Newtonian fluid would act as a powerful shield from any powerful/high-pressure attacks. This is the case as a non-Newtonian fluid as variable viscosity is dependent on applied force. If a large force hits the fluid it hardens like stone and can crack before acting like a liquid and reconnecting.
Training
There are three things I believe should be trained with water release viscosity manipulation. First is total maximum viscosity second is the quick change in velocity third is the manipulation of the fluid and shape after Adhesion.
Step one: take a glass of water, encompass all the water in the glass with chakra and pour it out. By timing how long it takes for a fluid to empty the glass the greater your control
Step two: I want you to encompass the water and pour it out but only increase the viscosity of the water as high as you want the moment it hits the ground.
Step three: I want you to harden the water in the shape of a glass of water as it pours and hits the ground. The more complex the shape of your water glass as you pour it the better.
Footnote: The elders, the things I say in the next log likely shouldn't read given all the mind reading skills ninja have in this village so don't read it till you can practice yin release enough to protect your memories. All you need to know is never trust the elders or any mission with your life.