Thermo-Dynamic Weak Ice Area

[Ice Hole]

During the warmer days ice thaws and the area of weak ice grows.  During cold snaps ice freezes and the area of weak ice shrinks.  This would force the player to change path or hope for cold weather.

Beach combing would be affected and again cold days are the safest time to avoid going through the ice.  If a carcass is on this dynamic weak ice area during a warm spell then consider that it will go through and be lost.  Dynamic weak ice based on temperature could be everywhere there is flowing water and make caution priority when travelling on theses frozen pathways.

[ManicManiac]

It's an interesting idea to think about.

[SpanishMoss]

Also, fires should affect weak ice, you can literally place fires on ice. If you keep a fire going too long on ice, then the ice could weaken.

Sorry for my over use of "ice"