Yes, while they look interesting there are reasons why saw blade lookalike wheels aren’t commonly used. I hate to think of how the weight of those dirt bike ones would affect the handling (probably not so much of a problem over smooth ice, but rougher terrain would be a challenge).

There is indeed a video of this.

There’s also a video of someone trying a similar setup with a dirt bike, though those guys didn’t reverse the front teeth (did still steer ok, not sure how well it’d brake).

How’s the serenity?

Apart from family and my own number about the only one I can think of is the Reading Writing Hotline (1300 655506) due to the sheer amount of their radio ads I’ve heard over the years while driving around.

Even within family I’ve only got one left that actually works though - Dad hasn’t changed his mobile number since circa 2000 but Mum did at one point and I never remembered her new one.

Indeed, I just realised that point - the force of propelling the anchor is tiny compared to what you can exert on the ship once the anchor is hooked.

A trebuchet primarily transforms downward motion (of the counterweight) into forward motion, so it would actually work - the trebuchet doesn’t push the ship back as much as it pushes its load forward. This is particularly so if your trebuchet has wheels and you have room on your ship to accommodate it rocking back and forth when firing.

Edit: Thinking about it this technique would work even with something that does impart equal backwards force on the ship when firing a projectile, because there is considerably more force involved in winching the ship towards the anchor than what is involved in actually moving the anchor. You aren’t pulling against the inertia of a free floating anchor after all, you’re pulling against the ground the anchor has hooked into.