When I sit for a full hour, too, I usually like to structure the experience in some way. I start out with metta--wishing goodwill in ever widening circles to include all living beings--then move on, always following the breath, to one of several different body scans that I use to create a framework in which to establish intention and concentration before moving into full body breathing and, if I'm lucky, a sense of moving out beyond the confines of the body and becoming nothing more than a part of the everything that surrounds me. Yesterday, though, I didn't even manage to maintain concentration for long enough to work through the metta practice, let alone the body scan.
Altogether, a very curious sit--and a rather unsettling experience. Since my mind apparently gave up any notion of discipline or struggle, it was absolutely painless. And I yet I judge it to have fallen short as meditation. It was more like being adrift on shifting currents, with no sense of direction or resistance. I might as well have been asleep and dreaming. But no one, afterwards, complained about any snores!