Looks like you nailed it Tony. I'm reviving an old thread but thought I'd add my 2 cents.
I smoked 2 racks of St Louis ribs (halved to fit the SI-2) and added 4 potatoes (olive oil & rub) to top shelf beside 2 half racks. The other Ribs were 1 shelf down.
5 hrs no peek and everything was very near perfect. Spuds were very crispy and well done.
Smoked at 235 and thanks to the Auber, temp stayed spot on.
I read Greg's post about up to 8 hrs on St Louis ribs so I'm not sure if my ribs may have been smaller or what. I'm preparing some Baby Backs for this weekend and decided to read up on the subject since I don't utilize my SI-2 nearly as much as I should.
My plan is to do almost the same again: 3 racks, 4 spuds (top) at 350 for 5 hrs no-peek. Apple (maybe pineapple) in the Miss lilly up against the wood box which will have appx 3 oz of almond/apple/hickory mix in some manner. A 2nd mini loaf pan on the other side will have warm water from the start. I have used warm juice previously, just dumb luck I guess.
My biggest problem is mastering the wood foiling. Have had puffing and ashes and last time out I foiled all but the top and got some smoke but not as much as normal and ended the smoke with the wood mostly intact but charred. A lot less foil is planned for now!
PS: Tony, luvin the new avatar... huge improvment