A few more tips:
1)You can book your next LL either after 2 hours OR after you tap into your most recently booked, whichever comes first
2)You can pin attractions to the top of your tip board in the app. Change these throughout the day to some rides you are wanting a LL for soon
3) Not everyone will agree with me, but once you have your list of attractions you would like to ride next, pin them to the top, spend at least 30 seconds refreshing the tip board before booking a LL. 30 seconds of refreshing can move a return time by HOURS (including bringing some back from the dead). If something jumps to a perfect time, do not hesitate and book it ASAP.
3b) It's up to you how long you want to play the refresh game. Personally I'm willing to spend all of my time in line before a preshow doing it, but it's a choice you have to make. My last trip (over 2 days) I got LL for within 15 minutes of booking for Safari, FotLK, RnRC, ToT, Pooh, Space, Buzz, and Pirates.