Here you can find Splatoon strategies posted in this thread. If you post yours below, I may add them in this OP!
Index: Use Ctrl + F and copy and paste these titles below!
1. How to conquer Saltspray Rig
2. Wall hiding...
3. ... and nullifying!
4. Covering area while refilling your ink quickly
5. Demolishing aggressive splatrollers
6. Conquer the Walleye stage
Also check the question and answer post for unanswered splatoon strategies that have been posted!:
http://gamrconnect.vgchartz.com/post.php?id=7318465
Newest strats will be placed on the top!
1. How to conquer Saltspray Rig - ohmylanta1003 & PixelPerfect:
"...on Saltspray Rig, I found it almost impossible to lose if you immediately rush the North square and then camp it by guarding the center area, which is the only path into the North square. I personally use the Aerospray rg, as the ink mines help quite a bit in guarding the center and the aerospray is an overall solid weapon. It might be a bit boring at times, but it is worth it, as the North square is almost always the determining factor in who wins on that map."
- ohmylanta1003
http://gamrconnect.vgchartz.com/post.php?id=7318349
"On Saltspray Rig, I usually went straight for the large area since having a large territory like that in your possession always helps out." - PixelPerfect
http://gamrconnect.vgchartz.com/post.php?id=7301458
2. Wall hiding...:
"If I saw a player coming i'd run around the corner, splat the area (including the walls) then hide in the ink on the wall. The enemy's first instinct is to shoot the ground so I could usually get a surprise attack sprung."
3. ... and nullifying! - CarcharodonKraz:
"The second also takes some stealth. If I found an opposing roller I would not try to kill them. Instead I try to follow them unnoticed with my own paint roller, completely negating their progress and wasting their time. Stealth is my key strategy so far."
http://gamrconnect.vgchartz.com/post.php?id=7303367
4. Covering area while refilling your ink quickly
This is pretty basic. Always aim high while shooting as you advance. Ink falls down during the curvature of your shots so aiming high leaves a trace of ink in front of you to squid through. Doing this continuously will cover a large area of ink while leaving you plenty of ink leftover for incoming enemies.
5. Demolishing aggressive splatrollers
Spotted a splat roller a few feet away and they're charging towards you? No problem! As long as you got space behind you, keep jumping backwards while aiming down at the sucker. They will be splatted in a few seconds of firing and you'll make them feel silly for choosing the roller for offensive gameplay.
6. Conquer the Walleye stage - PixelPerfect & t3mporary126:
"Stage-wise, I usually took the side route on Walleye Warehouse since the small corridors made it harder for my opponents to sneak attack." - PixelPerfect
http://gamrconnect.vgchartz.com/post.php?id=7301458
One way to claim such dominance is stealing the areas closest to your opponent's turf and spam their check points with sticky grenades to keep them at bay after hiding in your ink to refill your tank.
Here's a visual illustration of the plan
http://oi60.tinypic.com/jslzsm.jpg
While the red X seems like a good place to conquer because of the size and location, it shouldn't be your first priority to splat. By splatting the areas that are circled, you and your team can hide and ambush any incoming opponents coming from their checkpoint. Your foes will also take damage by standing on your team's ink. A Splatter Jr. set up can do this relatively well because you will probably have your shield ability ready by the time you reach the larger center circle on the map. Take advantage of that shield ability and pass it to others while splatting areas near your foes' home turf!
Alternatively, you can claims those areas anytime the opposing team is under 3 members. This gives them less option to super jump over your splatted areas nearby.
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So what tips have you guys swam across while playing Splatooning?
Here's a humorous strategy video already! (thanks the_dengle!)
https://www.youtube.com/watch?v=d_XJU3o-zr4