Sounds like you need a new pair fairly quickly. Personally, if I were to buy a new pair and I needed them quickly, it would probably be the Simms Headwater Pro Boot, which seems to be well-made, but I'm leery of Imported footwear, unless made in Italy. I am not sure where Simms wading boots are made. Years ago I had a pair of Cabela's store brand felt boots and they worked well enough, but I don't think they would be a good choice for hard use. I've been looking for a new pair, but none of the usual suspects seem to have made in USA boots. Definitely stay away from boots made in China if you expect to use them more than a few times.

l told my pap and mam I was going to be a mountain man; acted like they was gut-shot. Make your life go here. Here's where the peoples is. Mother Gue, I says, the Rocky Mountains is the marrow of the world, and by God, I was right.
- Del Gue