I also scrambled in EM last year. While it wasn't pretty, it worked out very well. ERAS has a function where you can submit your application to as many programs as you want if you are scrambling. You should also have paper copies and a fax in case the programs want them that way.
I think the scramble is where I got my money's worth for my expensive private school. (Since it didn't seem to help me in the match) The night before, I contacted the a few influential faculty at my school. They prepared well written, short introductions that they would email directly during the scamble. "Beriberi is the best! She should be at your program!" When the list became available, you need to have someone who knows a lot of emergency medicine programs to talk to (maybe the people in your class who interviewed most broadly?), because it will be hard to know where to apply (likely you didn't apply to any of these programs if you are scrambling. Then, when the time comes, the trick will be getting through. It is a lot better to have the call made by faculty/deans: "This is Dr. SuperDuper, Dean of the Best Medical School, can I speak to Dr. CrappyProgram director?
You also need to know your priorities. You will not be offered several positions and then be allowed to choose. Usually, you are offered one and if you do not immediately take it, then they move to someone else. Decide if you are going to reapply or take a position that is geographically/academically inferior. Also, program directors are going to want to know that you are going to stick (not reapply/transfer). It is time to start talking about your dreams of living in El Paso and all of the family you have there (that you have never visited). I think that a resident who will be there for 3 years is the most important thing that a scrambling program is looking for.
Also, I think the people I know who worried the most in medical school about scrambling were not the ones scrambling with me. You will likely be just fine.