Leave it in freezer zip lock bag (or any airtight container) for as long as you can. Days is better than hours. In a warm (but not too hot) spot is also helpful. This usually works. Pool water is not that harsh, and sounds like your Note didn't swim for long. Good luck.
WRONG - Pool water is very harsh.
Pool water will have chlorine in it. Chlorine is corrosive and also makes the water more conductive.
So when your phone hits pool water its going to short out internally faster when a power source is connected, think battery, then once he removes battery the second part of damage starts, corrosion. As the water evaporates it leaves behind the chemicals that were in the water. Those will start to eat away at the metals in the phone. Think connectors, circuit board and antennas.
The best thing is to get it to a tech so they can get it apart and remove as much as they can before it evaporates and starts to corrode.
FYI, Distilled water is least damaging, as its pure water with no contaminants. Tap water is next as it has less chlorine and other chemicals then pool water.
Id say pool water and sea (salt) water are among the worst..
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