I picked up a hops screen that goes on the bottom of the dip tube in the keg. Stainless steel mesh that slides on to the tube.
I have been hopsbag free, just throw the leaves in the keg with the screen on the bottom of the dip tube and bam.
If you want, I can look at getting you one or more the next time I'm South, I think they were around $7 landed back here as part of a bulk shipment, but don't quote me at 6 am.
JQ