Climb it where you want and the most left side is run off ice steepest and thinnest, sometimes closer to being W.I.5. The rest of it is usually easiest 3+
You can choose your grade and its easily top roped. Popular with winter hikers and they won't be wearing helmets, the trail goes very near the fall before it heads right and up.
Arethusa trail will bring you to the base of it after 1.5 miles. At the top take the trail down.
Short screws the further south you start away from the actual waterfall. Actual waterfall takes Longest screws. Often can here much water while climbing up it. Belay is a tree line above the falls. Its an easy walk off.