Fishnet,
Do the regulations not state that you cannot keep fish in
the slot between 18 and 25 inches? Your 5 lb fish fall in
the slot. Correct me if I'm wrong but I would think they
might be keeping fish 2 lbs and under or 8 lbs or over.
The average fish probably sits in the slot. When it comes
to icefishing, most anglers are there to experience the catching
of a 12 plus. The majority of anglers I know, let them all go.
Your probably right about the mortality of released Walleyes
on very cold days. The MNR conducted a Walleye icefishing
release study last year at the North Bay District office. The
lake was Lake Nippissing. Members of the Anglers and Hunters
club participated in a number of days fishing where released
fish were held in large underwater pens for a number of days
for observation. Fish did die, but they were few. I would think
the mortality rate would be higher on large fish that expend a
large amount of energy on the way to the top of the ice.
We would have a great resistance to no catch and release during
the winter. My best advice would be to fish no greater than say
20 ft and release your fish as fast a possible. If your going to
take a picture make sure your camera is ready. Your advice to
fish on warm days would also help. Maybe barbless hooks would
allow quicker releases.
Have a good day on Quinte,
BATMAN