You can use the exacto to get some of the matting up. Just take some super glue gel and glue it to another rock. I have pulled some up by hand. If the zoos grow over the edge of the rock, it makes them easy to cut off.
Best to use gloves with zoos though.
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,