The 350 Rancher I used for 7 years in Kotzebue, then since, down here is stock, and I once got two caribou on it that way, one on front, one on back, with the front legs stuffed inside the rib cage for the 7 mile trip home. Don't know if the commercial flat baskets would have hindered or helped, but the rear drop basket would have hindered in the rough going until the beach section.
No basket on mine and Ive got the same machine as that one.