You do know that she said she would be leaving for Panama immediately, and then 24+ hours passed between then and her reuniting with Michael. The only problem is how she found the boat.
I feel like I'm the only who thoroughly enjoyed this season. Since the theme of the season was "manhunt," and a lot of Michael's actions were impetuous (unlike S1, where he had the entire break out planned), I have no problem with all the crazy shit that's happened this year. And I, largely, had no problem with the finale. My only gripes with it:
1) Sara finding the boat.
2) The money just getting kicked in the water. A pretty abrupt (and disrespectful towards Westmoreland) end for an incredibly long subplot.
3) The "mad scientist" angle is going to lead to something just too outlandish.
Obviously I wasn't planning on there being a happy ending since the show was picked up for a third season despite being written for two, so I didn't care so much that Michael ended up getting screwed again.
But all in all, I liked the episode and the season as a whole. It's going to be a long wait to August.