I tried the deflectors one time (coming from a primo was used to using them and they helped with stability), and then started playing with other options on the KK. For most of what we do aluminum foil, food service pans, or lids end up being the most flexible / useful for deflectors. I will include pictures of the setup from this weekend (~36lbs for a block party). I have been really pleased with the stability of the kk even without the deflectors or water pans, etc. The kk chugged along overnight (no pit controller) as our local temp dropped from 60f to 35f - a good thing since I was asleep!