Thanks. Frustrating, indeed. I had to go through two boards myself. Funny that you and I have the same degree.
Whether you drill out of Miami or JAX it would be worth your time to call up the IDC SE OIC in JAX and to schedule a meeting with him. The purpose of which would be to go over your package and to discuss your idea of going on orders. If you want his contact info, PM me.
IMHO, going on ADT/ADSW orders to specifically support Intel would surely help, especially if you can come off of the orders with an excellent eval as well as a LOR from the SEL and CO of the unit/command that you are supporting.
What feedback did you receive from the OIC after you received word that you were not selected? There should have been some type of feedback. For example, when I was not selected the first time, the feedback was for me to get two more interviews and to re-apply. This was, I suspect, because I had a long break in service and did not have many enlisted evals to submit with my package. Getting those additional interviews are what tipped the scale for me.
What, if anything, did the OIC say about your competitiveness for IW as it relates to your electronic warfare background? Just a thought.