The ornamental design for a bucketseat, as shown and described.
FIG.1 is a perspective view of a bucket seat showing the new design;
FIG. 2 is a first side view of the bucket seat of FIG. 1;
FIG. 3 is a second side view of the bucket seat of FIG. 1;
FIG. 4 is a front side view of the bucket seat of FIG.1;
FIG. 5 is a back view of the bucket seat of FIG. 1;
FIG. 6 is a top view of the bucket seat of FIG. 1; and,
FIG. 7 is a bottom view of the bucket seat of FIG. 1.
The broken line showing of seat brackets is included for the purpose of illustrating environmental structure only and forms no part of the claimed design.