I ran my Oktava omni's Healy and did not really like the results (have to try again though) but I've gotten good results with a 2ft boom arm and a clamp for the non threaded end of the boom arm.
Never run a J-disk
JAson
why never run a Jecklin disc?
I have only tried it once and liked the results
as far as split omni's ... never tried them on 1 stand
I used to hang my omni's from the ceiling just inside the mains
when I always taped some friends in a local band
but that would be hard to do for most bands
unless you could arrange it with them and/or the venue