I can understand that the muscles of the Rotator Cuff group are small and therefore I could understand the recommendation of using much lighter dumbbells in relation to other exercises. But almost in any site I have found, the recommendation is to always work them with the lightest pink dumbbells and in the >15 rep range.
Isn't that wrong? Why not to strengthen that small muscles by working them with sets of 5 reps too with increasing weight? (For. For instance with, a rule of thumb such as "use one tenth of the weight you use for the overhead press""use one tenth of the weight you use for the overhead press" or something similar) would be very interesting.