...How exactly?

For some reason I find it easier to do sliding Dtilts -> Uair -> Knee easier than say Raptor Boost -> Uair -> Knee against floaties.
I've landed it before, it just seems that its easier on character that aren't floaties

raptor boost only combos on floaties at like 0-20% lol

Not necessarily combos, but just connecting the Knee after an Up air in general.

I mean in general combos are much harder on floaties, especially for CF.
early % kills are critical.

doesn't mean I'm good at them tho jiggs always lives til 120% for me LOL

Fixed it for you.

I might of found a new tech u dash then shield then use the gentleman and if you ure really fast then u can combo outta that

as I said in the other thread you made for this, dash -> dash cancel -> gentleman is faster and safer.

this is maybe the best falcon has ever been in smash, i unno.

Even though every character can do this, Falcon seems to be the best character for this
Shield pivot/slide
http://youtu.be/K9wDVOfDggw Is uploaded now

Is this just me, or does jump off -> up special beat basically everything on the edge? It seems like maybe if you timed it perfectly you could get perfect option coverage. Does roll have any vulnerability frames before they're out of reach?

for edgeguarding???

if you're talking about recovery then simply hanging on ledge and not rolling or getting up will make upB pass straight through you.

Will up-B not hit vulnerable people on the ledge?

nope. only hits if they try and roll or getup from ledge - jank as f*** and should be the other way round.

Happens in other smash games as well, blame Sakurai for that jank, lol