If your pack has some heavier gear loops, they may work as an attachment point. You will want an attachment point where you can create a snug fit with the least amount of slop. This will give you maximum control of the sled (and because it gets old when your pulk is jerking at your hips all day with a loose attachment). Our harnesses have loops on them that the eye bolt of the pole fits over and then a carabineer is slid through to make a good, secure attachment point – you’d want to mimic something like that. Another option is to sew webbing onto your pack belt to make loops like we have on our harnesses.