This is a sled I created several years ago to run our dogs. I have deconstructed the dog sled and put it back together to create an instructable for the Snow Contest. Please vote in the contest.
I have made three of these dog sleds from stuff I was going to trash. Build time is 30-60 minutes. The sleds are featherweight, durable and will provide hours of fun..
Step 1: Alpha and beta sleds
On the first one I faced the chair forward and hitched up Daisy, our very fast dog. I think she might be a Lurcher or a cull from a sled dog breeder. My kids, the crash test dummies, called it the death sled after trying it out while sitting in the chair. They were laughing and screaming so hard they wouldn’t have felt a thing. You could add another spreader bar/ footstand in to allow for a safety driver in the rear.
I turned the chair around on the next two and found that offers much more control. You can hold the arms to stand on the spreader bar and sit on your knees up on the chair once you're cruising.