Yes. I cut the chains to length and weigh it. I try to let the dog pull about 25% of his bodyweight.

I built a weight sled for my son once when he was in high school. I tried to use it with the dogs and it worked but it was not the work I was looking for with the dogs.

With a sled it is a lot more pull than I would want. The extra weight would be more of a muscle builder. Plus it needs a much more even surface. The chains just slip and slide, up and over just about anything.

EWO