What part of your boot is sqeaking?

I wear boots similar to the ones you have in the picture. Mine came from the COOP fertlizer/feed store.

Your toes and feet are going to freeze if you take your boots off. I don't think tennis shoes is a good idea either. Shoes stink and they let the smell/scent escape. Rubber boots help contain the scent. Thats one of the reasons I like them.