I'm gonna have to disagree with a few points there...
Saltwater temps may fall slower but they never get as high either.
Yes, LGM are a warm water species but they do not simply stop moving when it gets colder. They slow down sure, but people land them through the ice. They change habits, slow down to conserve energy and may be holding in different locations. They are still catchable though...even on a rainy night. It isn't as though bass are blind at night. They will not only use their good sight but their sense of smell, they will notice disturbances/vibrations and sounds etc.
I will also point out that carp are a warm water species as well..they slow down just as much during the winter to conserve energy. I mention this only to say that telling someone to target another warm water species in the winter may not be the best solution if they are looking for fast times...
Heres the thing...Yes warm water species slow down for the winter/cold weather... they do not however stop being fish. They need to eat to survive and even in ice covered lakes they will feed all through the winter, they simply need less to survive because they are less active. They still move around the lakes, follow warm water, follow oxygen sources, follow food sources. Finding the times, the areas and what baits work is a challenge but coming from someone who has caught 20+ pound carp ( when people said they could not be caught in water below 35 degrees ) in the middle of January and February it is well worth it, if you enjoy the challenge.
That said it is always good to take some time to focus on more active cold water species from time to time as well..just to keep things fun lol...nothing like sitting for 3 months or more with no fish, blegh. I said I liked the challenge, I didn't say I was a masochist.
It sounds like you had a good trip however so good on ya. I wouldn't plan to give up on the waters and Bass yet..but you may have to start really working for them soon lol