Somerset Dam has plenty, they mainly move at night so would have to stay a couple of night plus it might take 1 or 2 night to find them as they always move around. We were they late september and the most i got i 1 pot was 18 but only kept 6 as we were getting a lot so we were puting the small to medium ones back so we can catch them again when they get to a good size. We go up there 3 or 4 times a year and always get a feed or 2. We find the best bait is corn and spuds. anywhere from 6 to 20 foot of water.
Cheers Gav.
Ps. put your pots close to structure like tree stumps or rocky edges or grassy weed.