Even though i thought i would never want to get them mucky when i bought them, i just use my Dubarrys for everything!
They are flexible so comfy to ride in, they have good treads so good grip (great for me especially with all this ice! :p) and they just seem to cope with everything!
Just...
Stable bandages are probably the best option to help prevent legs filling, or you could give the magnetic therapy boots a try, these may also help as they increase circulation.
Hope you find something that works :)