info on ATV pull ?

[Thunderdually]

I'm looking for information on a weight transfer sled for ATV,s and SXS. If any one has any information on a sled for sale or plans on how to build one let me know.

It could also be a sled they use for Garden Tractor pulls.  Also I am curious as to how many ATV'ers would be interested in participating in a Pull if a place to hold an event was available.