Why clip it, I just drop it in and let the fish eat it. Mine destroy a sheet in under 5 minutes.
Depends on the fish. I only have one fish in this system and when the seaweed floats or moves around the tank, it goes to waste (i.e., the tang won't touch it). My tang will eat three sheets a day (about the size of a credit card) if the seaweed is attached to a rock. Otherwise, it goes to waste and pollutes the water.
I can see how your approach would work as well if I had other fish in the system to train my powder blue how to accept the food by alternative means. But since my fish was removed from the ocean about 5 or 6 months ago, it only knows what it was exposed to in the wild ....feeding non stop on algae off the rocks.
Hopefully, in time, I can train the fish to accept seaweed by other methods. It sure would make my life easier.