I've used the pulk a bunch of times to set up a "base camp" for going after summits in winter or winter conditions. Not that they can't be day hiked but because it is an enlightening experience. Here's a few:
Bondcliff trail about two miles below the summit
Hancocks at the base of Arrow slide
Sabbaday between 4th n 5th crossing to access Tripyramids
Lonesome Lake hut by way of Basin-Cascade
Carter hut by 19 Mile brook
Numerous other short hikes to legitimate and otherwise destinations
Other possibilities:
Owl's Head part way in - say before or just into Black Pond BW
Isolation up past Engine Hill
Carrigain before the ridge climb
Garfield well up Garfield Trail
Passaconaway if you choose Oliverian Brook for an out and back
Many more flat hikes or out of state ideas
Best to share the load between the pack and pulk. Don't overload the pulk because you have all that "extra" space. Use polpropylene cord because nylon stretches too much. I made a harness and belt using suspenders to keep it up off my thighs. Also used small sched 80 pvc to keep the pulk from running me down and cross or run the poles straight in different conditions. Crossed tends to help steer around obstacles if you don't lash the cross over. Happy trails!