You know the pull-up is a great exercise, but right now you may be too fat or just too damn big to get more than 2-3 reps. Keep working on it. However, if you want to create your lats, you will need additional exercises to get more repetitions. Try them:
The Rack Chin
These are pull ups or pull ups, with your feet resting on a bench in front of you. The Smith machine is a good place to set it up.
These machines are great for building wide lats, even if you like regular pull ups. I still have a chin about every two weeks, but if I'm really focused on building the expanse, that's my choice.
You can get the lats a bit longer than with normal chin, because you may get into the spine flexing as your feet are standing on the bench. You can round off the spine with rack chin springs on the floor to really stretch the lats. You will get a much stronger contraction at the top, because you can buckle a lot and really shorten the lats.
You want your legs to be parallel to the ground when you're up in the movement. A downward angle of the top of the legs is also fine. Just make sure you do not leverage by keeping your legs too low relative to the hull. Add chains as needed. It looks cool.
The Assisted Pulling Machine
Do not be afraid of the Gravitron machine. Do this after your standard pull-ups to increase repetition and volume.
Question of Power 1
The 10 best ways to build your back