I plan my day to move through each section and do each traverse only once. Usually, I go in the order of Gondola, Topridge, Straightbrook, High Peaks, North, and that covers the entire Upper Mountain, usually with a lunch break at the saddle between High Peaks and North. Then after I finish North, I go to Burnt Ridge or the Ski Bowl, and work my way through all the trails on both sections. If the bottom of Echo is open, then I'll cut in that way and ski Burnt Ridge first. If not, then I take Pipeline and do the Ski Bowl first. Yesterday, I did the ski bowl first.
Yesterday, Straightbrook was abnormally crowded in the morning, so I did another cycle through the trails on Topridge to see if maybe people would head elsewhere. Since it had only gotten even more crowded, I went to North instead, and decided to wait until after lunch to do Straightbrook and High Peaks. Since I have lunch early, at 11, by the time I was back out, both summit lifts were line-free.
As for the number of runs I took on Burnt Ridge, I just did a 2 laps each on all 3 trails.