I've done turkeys with an indirect set up on a kettle and on a WSM and I typically don't pan. I've not had any experience on a UDS. I used a pan once on the WSM because my wife wanted drippings for gravy but I had the turkey on a roasting rack set in the pan. Hope that helps some.
22.5 WSM, 22.5 OTG, 1992 Smokey Joe