Went to Rifle yesterday, got there right a first light. Went to West side and parked by the outhouse and walked over to swim beach. Ice was solid 10"-12" but you could tell that there had been 3"-4" of slush. I moved about every 10-15 minutes but could not find the fish. I fished from 10' to 40'. Finally I got lucky and must have camped on a herd of em. Non-stop until I got tired of catching. I got my biggest perch ever, a 13 1/2". Only caught 1 trout a typical stocker. Had the place completely to myself...not a person where I was.