Another question. Would this be considered 'legal' by the Continental Auditors on your Onepass account. I would buy 2 Itineraries. Here they are

EWR-SEA SAT Morning on Ticket/Itinerary 1
SEA-EWR SAT afternoon on Ticket/Itinerary 2
EWR-SEA SUN Morning on Ticket/Itinerary 2
SEA-EWR SUN afternoon on Ticket/Itinerary 1

Get what I am saying? These flights would basically be 'turn-around' flights but that is fine with me. I could go on the mileage run without having to worry about a hotel and save some money in that regard. Hope I made the situation clear. Thanks once again all for your replies and expert help.