Hyperspeed Water Sliding
Hyperspeed Water Sliding or 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)
Nonslippery Slope Variant
HSWS can also be performed on nonslippery slopes by staying on the slope for 1 frame at a time[1]. The speed gained from this trick asymptotes at ~100.