I thought I'd post some thoughts. I've done a bit of pulk trekking when I started out with two and then three dogs. At four dogs you move to a sled or toboggan. My pulk was a modified kid's sled. Maybe the commercial ones are better but I and the team had a hard time going off trail in deep snow. The pulk did not fit well in a deep ski track and there was not enough room to carry an injured dog. My feeling is, I could be wrong, that these modern pulks are best pulled behind a float packed with snowshoes, not skis. On another site, I ran across someone who spent some time in Lapland and he was describing their traditional pulks. Early pulks were shaped like a Viking double-ender boat, with high sides and prominent prow. In later iterations, the pointed rear was foregone for a slanted square transom so a person could ride in the pulk comfortably. I think with modern materials such as cedar bender board and glass/ epoxy, one could effect a very light modern pulk in old style. My guess, with no experience whatsoever to back it up, is that this style would be superior to today's flat-bottomed pulk when pulled in deep snow behind a narrow float packed by skis.

Three years after I heard about the old-style pulk, I ran across some pictures of them. I'll link them since they are copyrighted. Just some food for thought on winter trekking by ski.

http://www.arcticphoto.co.uk/search/previews/sjm0002-35m.jpg

http://www.arcticphoto.co.uk/search/previews/fin0060-08m.jpg

My 14" wide cariole/toboggan that fits in a snowshoe track:

[Linked Image]