I’ll have to try something like that.I am not sure if azaleas have similar propagation rules as rhododendrons but we had success rooting rhodie cuttings in a propagation box that was built with a rubber pond liner in a wood box with a glass top. The cuttings were placed in a medium that was quite sandy in texture. New tip growth was taken in the fall, sliced at a sharp angle, dipped in rooting hormone and put in the box and left until the following fall. Worked pretty well for us. The glass top was opened about an inch during the summer months but closed the rest of the time and the condensation was pretty much all the watering that the plants got.