See a lot of mention about pads moving around. I've always used a bungie type strap (see pic) that hooks on the sleeping bag loops (two sets at about 1/3 increments) to hold my pad in place while tent camping. Wouldn't this also work for hammocking? My cold setup is a Big Agnes 20 degree bag with a sleeve that the pad slides in, but I would like to buy a lightweight pad for summer hanging in my 45 degree bag. Wouldn't the bungie straps work to hold the pad in place?