I have a glass lid, I open the whole thing up and make it a game of flicking a couple pellets in at a time at each end.
If you have a real hog you can use a large net and hold her away while you feed the rest. The girls who are still hungry will start pecking around the bottom later on, just watch for them and teach them to come up for their name then feed them.
The biggest pig in my tank right now is blutip the female guppy, she's got a LOT of stiff fin to push her around.
Once the girls get really big they'll not be able to dart around so readily.
Try throwing the pellets down at the water to see if they'll immediately sink, the smaller girls will be more able to get at the food.