I was waitlisted last cycle and then accepted this cycle. They usually rank you on the waitlist, the fact that you were placed on the WL earlier in the cycle is never a bad thing. There are conflicting opinions on whether you should send letters of intent etc (as according to the adcoms on here like Goro and gyngyn they say not to but I have heard others say you should). I am not sure how RowanSOM feels about showing interest once waitlisted, but by the time the second cycle came around they knew how much I loved RowanSOM and knew that it was my top choice. If I were you, IMO I would call and talk with Dean Watkins and ask her why you were waitlisted and where you are on the waitlist and just express your sincere and extreme interest in RowanSOM and explain that it is in fact your top choice and why it is your top choice (if it truly is; this is what I did and it seemed to work in the long run). Make sure you don't annoy them, but I called once in a while just to keep my name on the radar. I also STRONGLY suggest that you go shadow a PBL student for the day. The school allows you to do this and it will show your interest in the school and set you apart from other applicants. They will say wow he really wants to come here and shows it not just says it. It will also express your interest in PBL (they like when kids want to go PBL, because that is the curricular style the school wants to ultimately transfer over to). Continue to send updates on coursework, volunteering and research. You can also volunteer at Rowan's teaching hospital on campus, this will look fantastic on your app and also show your interest. I strongly suggest you inbox one of my future classmates
@TattedMed he is a good resource as well. Also, do not lose hope, since I know there is always a lot of movement on RowanSOMs waitlist every year. Last year, not as much as past years, but still there is quite a bit of movement!