If you are getting attacked then blame Lynk. It's the tank's job to hold aggro.
Healers have never interested me much, so I don't really have much of anything to offer in the way of advice. However, the one thing I have seen repeatedly stressed by long time healers discussing strategy is to not over-heal (i.e. you don't need to heal someone back up to 100% to be doing your job). I've seen various forums posts covering recommended rotations and strategies for healers. Check out the Smuggler forum on the official site - I'm sure there will be something there to help.