I am fat bike curious. How many times a winter are you guys riding groomed singletrack?(I am only interested in riding single track)
What are your thoughts on renting fat bike vs purchasing?
My wife and I started with rentals, bought a used fat bike, and for a few seasons had a pair of them. Use depends on snow and grooming conditions. The grooming is good exercise. The more who help, the more riding or better riding.
In some ways it is really good for riding skills. I mean riding balanced (light hands, heavy feet), and being used to a bike moving under you.
When we had same brand bikes but one AL and one composite, one with some lighter parts, none of it mattered much if you are not a competitive racer. A suspension fork was not worth the price and weight for winter riding. 27.5 size wheels with big knobby studded tires can be strange but IMO worth it. They created more days when it was a fun and good ride.
Rotten ski conditions days are often great fat bike days.
Here's a general or whole community tip. After it snows lots of people who go out and ride should be on snow shoes first or helping someone operate one of the machine groomers. The people who just try to ride ungroomed trails and trails needing to set up hurt how good the riding can be. A groomed trail that can sit overnight is MUCH better.