Oh yeah air layering. Works like a charm on non-cannabis plants; don’t see why it wouldn’t work on our favorite flower.
I find the super squat broadleafs have a harder time in general, too (especially off seed plants, clones of clones have an easier time IME). Wispy narrowleafs usually root much quicker for me.
You can also put a tiny amount of rooting hormone in a bottle and spray plants with it. I just dunked the entire japanese maple cuttings in full strength hormone solution and they kept on truckin’. I usually don’t bother with hormone unless I’m having trouble or I’m working with woody stem plants.