+1
@Conway Stevens
I am still doing the 'classic' ( aka 'old timey' style ) dual deploy with a mid-body AV-Bay, drogue in the fincan and main in a tube up top by the nose.
My drogue is attached to the tail of the AV-Bay and I try to size my drogue so that the fincan -vs- the drogue+AV-Bay+main-tube+nose have about the same effective CD on either side of the drogue shock cord.
This way the two sections can fall from apogee to the drogue deployment altitude with the shock cord fully extended and fly as horizontal as posible.
Sometimes it takes a little tuning to nail a good drogue size but as you said, the drogue can be surprisingly small -- on my rockets, thats something like the planar area of two fins, depending on the relative tube lengths and weights on either side of the drogue shock cord.
I am doing a 34mm ( BT-55 ) rocket now and I am trying a streamer which sims about right.
I've never tried a drogue streamer but I think this will work well with the streamer attached to the base of the AV-Bay instead of a 1 -or- 2 inch drogue.
-- kjh