How to properly fall into water from great height

[Nystul]

1. Hit the button hanging around your neck.
2. Yell "Help! I've fallen, and I can't get up!"
3. Hope they bring a parachute with them.

Edit:
1b. seta gravity = 0
2b. Bind g "+grapple"
3b. gggggggg
4b. GOD
5b. .... This server sux!1111
6b. Rocket jump? If I can time it just right...