WeaponX,
I've been doing those rear DB raises with my head resting on the back of the incline bench... I'm can't believe I never thought of just lying down on a bench or something instead... lol
Do you think it would be better to lie down on a bench flat or lay against the bench slightly inclined and doing the rear DB raises???
I've never tried the head resting on the back of the Incline Bench, I see a friend do that at the gym... I'm sure it's good as well. Yea, I never gave the Incline Rear Delt Raises a second thought till I saw Jay Cutler doing them on his video....
I think it would be better to use a Incline instead of a flat, the flat won't really allow the DB's to almost come together at the bottom... you would be hitting the floor. A 25-30 degree angle seems to work perfect. It might take you a little bit to get your groove, because it can be a little akward at first, and you might have to use less weight compared to your head resting on the back of the Incline.
Some things that I noticed that have helped me are- try to position your body so you are laying on the Incline with your Chest down, with the top of the Incline bench being around your lower chest/nipple area... possibly a little higher. And just raise the DB's away... same deal with the pinky finger as well. Letting the DB's draw you forward for a good stretch and just coming short of touching them together at the bottom. Your chest may come slightly off the bench as you are raising, but you should feel these a lot!!!!
Like I said, it might take a little bit to get the groove. I have my wife put her foot on the base of the Incline Bench, because as the reps are getting harder I tend to start moving the Incline Bench forward. I think you work out at home, but I have also seem people do these on the new age T-Bar machines they have out there as well. The kind with the pad for your chest. I think that these are the best rear delt buuilders around, I used to do standing rear delt DB raises and i was using 65's, now I only use 25-35's with the Incline and I am feeling it alot better. She does them with me as well, and she agrees that they really, really work that area good. Hope that helps.