Yes, most of the "winterizing" steps don't really have much to do with temperature. Fogging prevents corrosion during long periods without use, lower end oil needs to be changed on occasion, etc.; this is true regardless of temperature.
I am not sure how it would work as well for Chinook and other "once in a life spawners".
I guess if they lived several extra years by not spawning they would get huge. But if they died when they achieved their normal spawning age, it may not make much difference.
For multi-spawn fish, they get large because they don't experience the weight loss associated with spawning but continue living past the age that they would normally begin to spawn.
There is a park association that is very anti-fishing. They give TUFA (Toronto Urban Fishing Ambassadors) are lot of trouble when they have fishing events in High Park.
Do you have a copy of your deed? It may come with some special rights.
I recall seeing a real estate ad for a property on Grenadier pond. Appearently it had shoreline rights that allowed them to launch a boat. Maybe that applies to your property too. Then you can really piss the park people off.
I found the ad
https://dailyhive.com/toronto/toronto-home-sale-comes-with-boat-grenadier-pond
I theory, the pressure on the ice will be equal to the tire pressure. Rigidy of the tire itself along with snow cover on the ice will through the calculation off somewhat.
Of all the things to worry about on a trip to Northern Ontario, I never thought that a one armed baboon would be one of them.
https://globalnews.ca/news/10167511/woman-attacked-escaped-baboon-ontario/