I think its a matter of opinion. The skinnies seem to go to the bottom faster if you're in deep boggy mud. Does the creek have a sandy, muddy, or gravel bottom? Out here where I ride at I like my wides better than skinnies that I used to run. The skinnies would dig into the sandy bottom and I'd end up stuck in a water wheelie. Mostly when coming out of the water channels. Its a P.I.T.A. to have to lock into 4wd and let the front end down and get off and push! I never worry about it with the wides. NOW>>>in the same scenario...I noticed that riding in the buddy pit out at Mud Creek, the guys with skinnies on the rear moved quicker across the pit than I did....my bike just kept standing straight up, guess the skinnies cut the sludge better and kept moving forward. So like I said, depends on what kind of bottom. Also, keep in mind that the wides hold a larger volume of air, so the rear end is more likely to try and come up if you have wides. I dont worry about it due to my width and the rake on the rear arms that I get from the Catvos.