Ideas for displaying my work

Hi all, I'm wondering if anyone might have some advice for hanging/displaying my work in a gallery. I'm an artist and my main medium is photography. I intentionally like to hang my photos straight on the wall, without a frame. I've used pins and picture hanging/mounting squares, both which ended up ruining the prints. A few of the holes from pins got torn all the way through, and the picture hanging adhesive I used was too strong and the paper tore when taking the images off the wall after the show. I think foam core looks tacky. I'm pretty stubborn on not wanting frames but I don't want to have my work keep getting ruined. What other options are out there? Any ideas appreciated!