we've been chasing that elusive 5:00 century for a few years. You came within minutes! Nice job! Our closest was 5:02 min motion 5:12 on the course (including fueling and stop lights). This will be the year and I think you'll get their first.
Did you see Lane Parker posted a couple pictures on facebook of you at the start?
2:50 to turnaround and 2:15 back, must have been quite windy!