Has anyone successfully increased the waterproofness of any of these ESCs?

I'm getting a mamba micro pro (considered a sidewinder micro that looks easyish to waterproof) for my mini-t which will be a offroad basher but it is going to get wet on occasion, one of the places i run is right next to a permanent bog and there's a perfect bit where you can see a natural corner to drive round, but if you get it wrong, you're in the bog.. my old cobra went in it hundreds of times lol