Below freezing
Posted by: jerrysmith
on Nov-27-12 10:23 PM (EST)
We paddle all winter (Michigan).
My mukluks have straps too, but I've never had reason to tighten them - they stay on fine without bothering to tighten. If they did freeze, they would easily release if submerged. The only real concern is to be properly dressed. Wet suits OK, dry suits superior.