Used Malone Xpress Trx-S Ballon Wheel Scupper Sit-On-Top Kayak Cart - The Malone Xpress Trx-S Ballon Wheel Scupper Sit-On-Top Kayak Cart is the ground transportation solution for carrying your gear across dry land. A soft shoreline can be challenging for portageAdding low pressure sand wheels to the ClipperTRX & XpressTRX frames.