Not sure what you mean by bidding for trips that overlap. We have PBS so you bid for the type of trip you want and days you want off and pray the scheduling gods can build something that matches those preferences. You can bid for specific pairings but you have to be senior enough that nobody would take those specific trips before you with their preferences. We also have a weak SAP but I wouldn’t count on that unless you want to add to your schedule. I always bid min hours which gives me my top preferences ever since I’ve been able to hold a line. Then I build off the trade board (not open time) to reach my preferred 95 hour months. That way I have control of what extra trip gets me to 95 hours and not Flica throwing on some crappy extra 4 day with a bunch of 5:30am shows.