I was out last night in west metro and the water had mostly either frozen again or gone down the open holes. I was pleasantly surprised. We lost about an inch of ice though the top few inches were starting to soften.
I would build a frame that your current otter sled would fit in that has downhill skis on the bottom of it. I did this for my setup that is very similar to yours, I can pull 100 pounds through 8" of snow with very little effort. Side note I wouldn't pull it with a four wheeler, mine slides to easy and wants to hit the back of the wheeler when I try to stop.
I've got an Eskimo 949I which I love. We occasionally go deep off the trail to isolated lakes and my otter sled is too much like dragging an anchor when we break new trail or if there is deeper snow on the ice. I am in search of a slender long sled that pulls easier and can still accommodate my hub house, auger, buckets, poles etc.
ive looked at gander, FF, cabelas, Joe's and the like without finding exactly what I want. Does anyone know of a sled that fits my description? Thanks and tight lines.