Tim Jones published a brief article in the Nashua Telegraph describing the trade-offs between wearing a backpack or pulling a pulk.
“In theory, the pulk just sliding along behind you sounds wonderful. In practice, it works very well on smooth flats and slight downhills, especially if the load is light, not so well up or down steeper hills. Pulk pulling can get pretty complicated threading your way through tight trees, around blowdowns, and crossing brooks and steep-sided gullies. On side hills, where the pulk wants to slide downhill of the puller, pulk pulling can be a real pain. Here in the northeast you can encounter all of those challenges within a matter of feet on any given trail.“