Oh nice, this thread is back. I was using the Splash Wall on the .52 and .96 Deco before, and for that it's good for "wrangling". Some general moves that work for all weapons.
-When an enemy tosses a wall close to you, toss your own in front of it. They might not even notice, it's hard to see a splash wall behind your own wall.
-If your teammate throws a wall, throw one next to it, two of em side by side can block a good chunk of the map.
-Block krackens, great if you're around teammates because it both blocks and can stop his momentum. BUT don't let the wall drop directly on him or it won't deploy, it'll vanish if it lands on top of the kracken.
-Toss it at inclines for quicker deployment. Not faster to set up (that trick was patched out) but closer so that you swim behind it sooner
-LOTS of walls to bounce off. They're map-specific and you'll have play around. Great for putting a wall on the tower
Now I'm on the Bento Splat Charger and for the charger the wall is much more of an escape tool and a push tool, not so much a wrangling tool since you don't want enemies that close to you.
-For escape toss splash wall at a wall or corner, hide behind, superjump away. Or block the only path, swim back. Come back 2 seconds later without losing any special meter.
-For pushing, particularly when there are 2 guys shooting at/near you, toss the wall and try to get a full shot quickly. People don't stand around to be shot and you don't have much ink left.
And maybe 1 out of 5 games you'll lucky and get a kill via splash wall. That's the best.