Organized Obie offers the best solution on the market for holding RV pocket doors in transit. The Ultimate Pocket Door Holder is great for replacing problematic straps and snaps. Ultimate Pocket Door Holders are made with durable nylon infused fiberglass, marine grade bungee, a pull tab, J-Hook and mounting hardware.
Ultimate Pocket Door Holder Installation Tutorial (Pocket Door Holder shown in tutorial is the smaller version. Installation is the same.)