I'm with HBMTN, keep them whole as long as possible. This does to things, conserves heat and keeps moisture in the butts. Once exposed to air both are lost.
Team: Pyle's BBQ; Yoder YS640; Good-One "Trail Boss" 60T; Weber Kettle w/rotisserie ring; Big A$$ Rotisserie; Weber OTS; New Braunfels offset smoker; Weber Smokey Mountain; Chargriller Akorn.
Saddles BBQ Bistro