Board from the back.
Board window seats before middles
Board middles before aisles
Prioroty deplaning. Let the pax who has a close connection get off first. The passenger who has a four-hour wait can afford to stay a bit longer
Know what you are doing with IRROPs ahead of time. (99% of the pax want to rebook on the next flight. 1 passenger needs to rebook to Fargo via FLL and recover his luggage and has a special diet.) GA, don't spend the next 25 minutes on the 1% and make the 99 others wait.