Some people take the concept of "if you can dream it, you can do it" to slightly deeper extremes than others. Now, it's reasonable to assume that if you're the kind of person who's spent literal decades building pulsejet engines in their garage, then you're probably going to also be the kind of person to take a Facebook Marketplace purchase-inspired build a little further than most of us. And, at least in the case of the guy who runs the Build N Pulsejets YouTube channel, you'd probably be correct.
As he tells the story, he purchased an unassuming, little retro two-wheeled kick scooter off of FB Marketplace. He had some ideas for what he wanted to do with it, but things quickly escalated when he started considering a pair of skis he had laying around in his house. Pretty soon, though, he realized that just two skis wouldn't really do the trick if he wanted it to stay stable and upright, and that maybe adding a third ski on the front that was a snowmobile ski would be better.
It's a classic case of trial and error, fitting tactile pieces together until you find a configuration that approximates something that, in your experience (whatever level you're at), should accomplish what you've set out to do. Only in this case, he found out that the skis he'd first started fiddling around with are actually being held in storage for a neighbor, so he probably shouldn't cut them up.
No worries; a pair of snowmobile skis on the back might be a better option, too. That way, all three skis will have blades that can be sharpened to give better grip on the ice, because that's exactly where he plans to run this trike once it's fully up and running.
Will the whole project come together in time to safely (for various values of 'safely') take it out the ice in northern Michigan before it gets too warm? Thankfully, the answer is yes; you'll get to both see and hear this project ski trike run if you take about 24 minutes to watch the video.
Would you give it a go if you could, or not on your life?