Hey Burque at what temp do i want to smoke my cornish cross chickens or the young rooster ? You said smoke for an hour than turn up to 375
Your rig is different than mine, on mine I would go 180, that is the lowest smoke setting I have on my unit.
I am not sure what temp settings you have, but I would go sub 200.
On the Traeger I have I avoid the smoke setting because even though it is supposed to smoke at 165, it is based on pellet timing versus actual temp so you can end up with wild temp swings. Again, your unit may function differently than mine.
*** What you are trying to accomplish is smoking the rooster without cooking it much, so anywhere from 165 - 185 is alright. Then going to your higher heat is going to act like an oven and do the actual cooking. With a smaller animal it is going to cook quick, so I would consider pulling it when you crank the heat up to 350+. Once it hits temp, which takes a few minutes, put your bird back in (I usually pull it off into an aluminum pan and then leave it on the pan when I put it back into the smoker.) At that point its a temp game. I use a couple of temp probes, one that is leave in and feeds out to a digital unit that tells me whats going on in one place and then I use a digital probe that I put in various places to make sure we have good temp everywhere before I pull. usually it is no trouble as I put my leave in probe in thick breast meat that takes the longest anyway. 160 degrees and it is dinner time!
I also usually spatchcock (cut out the backbone and lay flat) my birds so they cook evenly. If you want the best instructions on how to do that youtube it! Much better video description than I will give you over a message board. ***
Best of luck, and no question is too weird I will happily share any info I've got. I am still
relatively new to smoking myself.