He's asking which is most important, being on the X, or having a good setup, and is trolling.
I'll go first, thus subjecting self to contrary opinions that poke or pick at mine...
Being on the X is good but I never am, yet manage to kill lots of ducks.
I feel that having your setup right, calling well at the right time, and being still n patient...are more important than being on the X even when you are (on the X).
You gotta be good at setting up quick, good at calling, good at shooting, (a good retriever helps) and good at picking up quick and leaving quickly.
The quicker you can get in and out, the quicker that ducks can come in and loaf around after you are gone.
That's how it works for me anyway.
INTERNET CREDIBILITY is...an OXYMORON.