Go to redsox.com, click on the Spring Training or Jet Blue link, you can see a seating chart, Red Sox dug out is down the 3rd base line, you can also see what if any tickets are available (mostly Standing Room Only) for the dates I was looking at.
I'm thinking about going. One time I got tickets by going up to the box office after the last game I was attending and some one had turned their tickets in and was able to get some for a future date my brother was going to be in town. Since you live there I would try to box office too. But the ST tickets were on sale at the City of Palms park box office since Jet Blue isn't open yet.
Good luck.