| 摘要 |
A water sport flotation device having an upper surface directed toward a user, an opposing bottom surface directed toward the water, and a pair of stabilizing fins, each fin having a top portion and a bottom edge. The flotation device further including a plurality of longitudinally disposed through slots in the upper surface and bottom surface, each slot partially surrounding each fin, and a flexible, resilient biasing means attached to the top portion of each fin and affixed to the upper surface so that the biasing means applies a downward force on each fin. The biasing means allows the bottom edge of the fin to retract through the slot and parallel to the bottom surface, if necessary, if the flotation device encounters an object in the water. |
