The tow dolly would work, or you could add tow bar brackets to the S-10 like I did and use a tow bar to get it home. It took about an hour to add the brackets under the front sub frame on my 1996 S-10. YMMV
I would only tow with a capable vehicle, something with at least the weight of the vehicle you are pulling back. If the S-10 you are looking at is a stick, or an automatic with driveshaft removed, flat towing is safe and effective.
If I wanted to use a dolly, they are a little bouncy when towing, but on the interstate it should not be too bad. Try to tow with a heavier vehicle as this will be bounced around less by the tow dolly.
A four wheel trailer is usually ideal. When setup properly, it tows smoothly, you have no worries about removing the driveshaft on the s10 if you get an automatic, etc. But it takes a significant vehicle to tow the weight of the trailer and the S-10.
Most rental small trucks have hitches on the back so they can pull a trailer. There are only 3 common sizes of balls: 2-5/16" for heavy trailers, 2" for most medium towing, and 1-7/8" for light trailers.
Howard's dolly likely has lights on a four prong flat connector, which is kind of universal for small and medium trailers. A seven pin round connector is used for trailers with electric brakes. I have a 7pin to 4 pin adapter you can borrow.
Do you have experience towing?
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