I can't tell you a time but when the bone pulls out easily it will be easy to pull. I would start a little earlier than you think you need it done. Then hold your pork in a cooler until dinner time. That way it is done and ready to go. You should be able to hold the pork for a few hours in a cooler without any problems.
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.
Saddles BBQ Bistro