Planning a month long trip in March from Florida to California. Going to hug the Gulf coast all the way to Brownsville, Texas then hug the Rio Grande to El Paso. I need a bit of extra space for storage so I am planning to place some light items on top of each saddlebag. The conundrum is how to lash these items securely to the top of the saddlebags using tie down points such that I don't ruin the integrity of the saddlebags. I have Vario saddlebags.