What happened the first two cycles? What did you fix? And what did you do during the gap years?
-First cycle I applied relatively late, probably submitted primary in august, completed secondaries in late sept/mid-oct
-second cycle I applied earlier, primary end of june, completed secondaries at all by mid sept, while working in dental research, didn't really get my PS or essays reviewed or anything like that, or change really very much about my application, maybe ~50 more hours community service (I thought the main reason for not getting any interviews was I was so late)
In between second and third cycle I went to a SMP, my uGPA was a 3.6 so it wasnt terrible to begin with, but I wanted to cover all my bases. Volunteered a lot more, did clinical research, shadowed physicians (I had no shadowing experience before), got a 4.0 in my SMP. Had to retake my MCAT because it expired and I got a higher score. Made better relationships with my SMP professors and got great LOR (i went to a large state school for undergrad so my LOR may have been weak due to weak relationships).
-Third cycle, applied first day AMCAS opened, completed secondaries late july, early sept everywhere, also got a job doing really cool clinical research that I could write about for my "what are you doing during your gap year" question
So what I did was shore up every single possible weakness I could've had, so that way if an adcom came across my app theyd see improvement everywhere.
Applied kinda late? = applied day one
GPA iffy? = 4.0 SMP
Bad writing? = got multiple opinions on my PS and essays
not enough involvement? = ~350 more hours of volunteering, shadowing, clinical research, interesting "gap year" job to write about
Bad LORs? = much better LORs
MCAT? = even better MCAT (my mcat was already high to begin with)
At the end of the day you dont want to leave any doubt. If you have to apply again, do it in a way that you know you gave it everything you had