Doing a little of this and a little of that is a good recipe for strengthening, which is what we don’t want. Another issue is time. I doubt a set or two per day in a given position is enough to make the best progress. Maybe it is in the first week or weeks, but you’re better off hanging more sets. Time under tension seems to be one important factor. The more the better. Also, by hanging more sets (in a single position) you can attain and ride fatigue using lighter weight.
Please elaborate on this. I’m particularly interested in the first sentence. I always thought that unnecessary strengthening was primarily from fatiguing more than necessary to stimulate growth. I never thought of it as something that you could get while doing too little for significant growth. I’m the new one to hanging though and am very interested in hearing more.