It is against the law.
I'm in Rogers Co. Okfuskee may be to far south and dry to have much luck, but it's still a good excuse for a walk in the woods.
As dry as it is, you're going to have to find some river bottom land where the soil is still moist. You need to be able to cover some ground. I never found more that four at a time in a 20' circle. Most seem to be able to find them in clusters, but not my experience. I found almost all mine on a slope just above where there would be standing water after a good rain or two. They seem to like moist ground but well drained.
^this is accurate. My grandma made me pull over in a state park when she saw some ripe prickly pear cactus. She wanted to make jam. I pulled over and we filled a couple wal-Mart sacks full. Park ranger came by and told her she couldn’t take them because they were a state resource. She asked him if he was going to pick them and make jam. He said no and she told him that was the dumbest thing ever. She told him to give her a ticket and kept picking. He was a nice guy and just drove off.
