Hyperspeed Water Sliding
Hyperspeed Water sliding (HSWS) is a technique to repeatedly gain speed via C^ sliding then going into water. Going into water conserves sliding speed, which can be used to gain speed by conserving that speed back into a sliding state.
Execution
This uses the C^ hyperspeed trick and sliding speed conversion. On a slippery slope with water, crouch and C^ on the same frame to start sliding. (Somebody add more and better details)