Just My Opinion
Hammocking negates the benefits of the buddy system used in Scouts to some degree. I feel that younger Scouts should sleep in tents with their buddy. They learn to plan (who is bringing the tent?), they work together finding a suitable site and pitching it and for those Scouts unfamiliar with sleeping outdoors (most of them), having a tent partner makes them feel more secure.
I am not sure that I would trust young Scouts to set up their suspension properly and would hate to have one get injured because of that.
Don't get me wrong, I am not against Scouts hammocking. In fact, I plan to teach the Hammocking Merit Badge (I know it's not a real MB) to our Troop after I feel competent enough to do so after Gunner teaches me some things.
Just my opinion.