Mayflower is located on the right side of the Prow area, in the second to the last big right-facing corner (left of Fool's Game). I think this is the best 5.9 route at The Forks! First climb a short pillar with a finger crack in it (shared with Fool's Game) to gain a big shelf. Move left, place some gear, and make a big stretch across to an arete on the left. Climb the blocky holds on the arete (don't fall!) to gain the big right-facing corner above. Beautiful hand-sized jamming above takes you to the rim.