My bags hang low. The 2" holes I need for the oat hay, which is very coarse and stiff.
I have my horses right next to the house, and been watching them closely how they eat with the nets. Slow, way more breaks than when the hay is on the ground, way more. Consumption went from 25lbs per horse down to 17. I weighed the full nets and raked together and weighed what ended up on the ground, and that is way down too.
As for "just throw the hay in".... I have two sets of nets filled up so all I have to do is switch.