I still do them. For ghr's, load up about 400-450 lbs on a bar. Get a tampon, put it on the bar, and get a matt of some kind to go under your knees. Hook your legs under the bar, and have at it.
For reverse hypers, simple lie down on the other side of a hyperextension, hold on to the base, and perform reverse hypers. Add ankle weights or bands for added resistance