Rhomboids are a weak link for many lifters. Target them like this. Use a close grip attachment and pull down to the sternum. Flare the elbows out at a 90-degree angle.
Heavy bent-over dumbbell or barbell rows are still best for building an impressive back, but the rhomboid pulldown is a great finishing exercise for adding more volume without taxing you as much as the bigger movements.
Use a V-bar or close grip attachment and pull down to your sternum while flaring your elbows out at a 90-degree angle. Keep your trunk stable to prevent excessive rocking.
When it comes to exercise performance, especially the more exotic movements I often prescribe, most people grasp the big picture but miss the finer points. To remedy this, I created this "toolbox" series to help experienced lifters fill in the blanks and newer lifters learn about some very effective exercises. Here's the newest installment!