What do you wear for footwear when you take out the insulated Parka and bibs?

I'm looking at some gore-tex insulated boots. While Cabela's and BPS have a lot of camo hunting boots, they don't have much for fishing. Also, I'm not sure which sole pattern I should be looking for.

I wear the Muck boot works great for me Cabela's and Bass Pro sell it.

For really cold weather I use gortex with at least 800 grams of thinsulate. If you buy them a couple of sizes too big or at least a couple of widths wider than normal, you will be able to layer socks to help keep you warm.

I buy the smoothest sole since it is in the boat instead of out in the woods.

You will have warmer hands and feet if you keep your head warm.  You can lose over 1/2 of your body heat through your head.  I wear a complete hooded mask and glasses or goggles then cap then hooded sweatshirt to keep my head warm.