I normally just use bungies to hold extra stuff that doesn't fit in my panniers when I commute but I don't like the look of how much they press into my sleeping bag and thermarest when I crank them down. Plus they always seem to be too long or too short for what I need to strap down. Should I worry about them rubbing a hole in something over a long haul? Anyone use long velcro straps or something else that offers a little more adjustability to get things tight but not so tight that it causes your sleeping bag looks like a tube of toothpast that got squeezed in the middle?