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[Star Wars] Were snowspeeders given the harpoon as a tactic to directly counter AT-ATs?

In Episode 5, the only successful rebel tactic to counter the AT-ATs is to trip them via the snowspeeders cable. Was this equipment a standard item on the speeder? Why was there even a harpoon on a fast moving aircraft? Were there other planets where this model of speeder was used and the harpoon was then likely more of a conventional tool?
gpt
The snow-speeders were originally civilian cargo-hauling aircraft that the Rebellion converted into bargain-basement fighters by adding guns and a targeting system. They're basically flying tugboats with a pair of blaster cannons strapped on. 

The magnetic harpoon and tow-cable were originally intended to be attached to large cargo pallets suspended on repulsorlift platforms, so that they could be towed from one location to another. Luke had the idea to use them as a makeshift lasso because he grew up on a farm. 

Uncle Owen didn't own any herd animals (or at least we aren't given any indication that he did), but Luke did have friends, and some of their families most likely did. Luke may have seen them lasso a nerf (or some other herd animal) at one point or another, or even helped them to do it.