Rockville Fish and Game Annual Ice Fishing Derby Crystal Lake, Ellington. Date 1/29/22 @ 7:00 AM. No ice date 2/5/22. Cash prizes for heaviest fish. Registration ($25 / $10 for 16 and younger) Registration begins at 5:30 AM. Registration cutoff 7:00AM View the Registration Form 5 Crystal St, Ellington. Kevin Ross email@example.com (860) 266-8929.