I'm not sure if any of the short roller wheels that are used like for going in and out of parking lots will help you. You must be on a dirt road if you're crossing a small steam. The small wheels will just dig into the dirt and the back of the trail will still hit.
eTrailer rollersBill
Nodwell RN110 out moose hunting. 4-53 Detroit, Clark 5 spd, 40" wide tracks, 10:00x20 tires, 16,000# capacity, 22,000# weight. You know the mud is getting deep when it's coming in the doors.