Never heard of rest/pause training method before. I've done some research and it seems like something I am willing to try with bodyweight pullups.
I also came across an interesting approach that would allow me to do weighted pullups in a similar manner.
"What you do initially to prepare yourself for modified rest-pause training is to take your three rep max and do ten singles with that weight. Instead of taking only 10-15 seconds between each set, take one-minute breaks between each set.
For most people, this won’t be too difficult and that, of course, is the point. I want you to build a pattern of success with a few relatively easy training sessions to prepare you for the brutal rest pause training sessions to follow. Once you can complete all ten singles with one minute breaks, decrease the breaks to 45 seconds between each set. Keep the weight the same.
Once you can complete all ten sets at 45 seconds, go down to 30 seconds. Once you can do that, go to 15 seconds (even though you’re only resting 15 seconds, you’ll still rack the weight in-between).
Once you’ve completed ten sets with 15 second breaks, increase the weight by 10 pounds and go back to one minute breaks between sets. Work your way down the rest pause ladder again until you’re back to 15-second breaks. At that point, increase the weight again by another 10 pounds." (http://tonygentilcore.com/2013/03/rest-pause-training-what-why-who-and-how/)