Thanks for the compliments but I don't have advanced knowledge haha. So idk how graphically intensive the water script is, but its just like another object that is see-through. But you can also go inside of it. You can check out script here:
http://forum.toribash.com/showthread.php?t=387213
So where you put the script is Toribash>data>script then when you load the map go to setup>utils>scripts and find water_anw.lua.
If you want to learn how to use it in a mod there is an example mod you can download from that thread or you can look at how I did it.
It seems like every mod I make people want to have the original tori in there lol. But I made his arms like that because of the ring toss, that's how your arms would be in real life to do that obstacle. If there are more people that don't like the arms I will make a 2nd version