First time I have done ribs without foiling, no spray, nothing. I didn't even open the lid for 4.5-5 hours. Needless to say...this is the only way to go for me from now on. 225 the whole way, 250-275 to finish around the 5.5 hour mark, brushed with BBQ 30 min before taking off the smoker. Also left the membrane on. The moistest most flavorful tender ribs ever!