Jack, I have a 6x6 bigfoot with chanel tracks, was out yesterday to try in the mud and swamp for about an hour and seem to work very well. They grab pretty good. On the gravel road they throw quite a bit of gravel and rocks, I will add flaps some time soon. I put a hinge like Old Tucker did on his. I didnt have a whole lot of snow to try them in, but the little bit I had was pretty good also. So far I think they are a good track. I have them on 25x12x9 tires.