Option 1 works just fine if they're mixing up their poofstalls with ledgedashes/ledge hop aerials (which any decent Sheik will do vs anyone who actually takes the edge). Obviously it won't work at all if you don't challenge them.So what are these proposed answers? I'll list the first few that come to mind.
Waiting til they come off the edge: If they are ahead and planking correctly, why would they ever do that?
Committing to a Forward or Down Smash in hopes of hitting in the tiny vulnerability window: Super risky, and super dumb. Likely to get you killed.
Going over and spacing Ftilts/Pivot AC Bairs: Safe but uneffective for actual getting damage if you are way behind, not to mention putting you in the range of getting gimped.
Stealing the edge: A faster character, presumably Fox, could shine turnaround wavedash onto the edge, but their being within that range would fairly risky first off. Secondly, it could work out well if the Sheik is not paying attention and SD's because Fox took the edge; however I would think that an observant Sheik would just react to the edge being taken and land else where out of range to be punished or on a platform. Then what? You get a hit and maybe a KO depending on percents/DI etc. But you could just as easily not catch the edge if Sheik beats you there and then you are in easy gimp position. There are enough risky factors in trying to take the edge from a character with an unbelievably good gimp game vs Spacies that it barely seems worth the risk. Sadly, this seems to be the best option?
I'm very open to more ideas so please feel free to drop some knowledge on me.
Option 2 sucks like you said, if you can see a vulnerability (e.g. the Sheik does the initial up+b without ledge frames) then it's a lot better to dair/shine spike.
Option 3 is mostly pointless, you're somewhat "safe" but effectively get nothing done, this is the main problem I see with most spacies who struggle with ledge camping, they don't really do anything to get them off of the edge.
Option 4 is actually very reliable, I don't see any issues with it? Sheik can't "beat you there", she's stuck in the middle of her up+b animation while you force her on the stage. Sheik's up+b end lag sucks, unless they ledge cancel it (I haven't seen anyone do this consistently with Sheik so far), you will be able to get a good punish from it and push them into a bad situation. Characters like ICs/Falcon just get a free grab from it and they can do so much to Sheik from a grab.
vs puff? Sure, but they're useless against various other stalls (due to invincibility).Sheik can deal with planking better because of her ability to throw needles diagonally, yes.