Put In is the initial launch point for the Cascadilla Creek run, offering paddlers an immediate entry into the creek's tight and technical character. The rapid presents a narrow, boulder-strewn entry with potential for pinning and limited maneuvering room, requiring precise boat positioning and quick decision-making from the start. Paddlers should carefully scout the put-in area and assess water levels, as the initial descent can set the tone for the challenging downstream sections.