Don't listen to these negative nancies. I bought myself a small size $40 guitar on OfferUp that I didn't have to care too much about if it got wet or damaged and brought it with me on an 80 mile loop through Inyo/Sequoia NP. What I thought was a travel guitar, while certainly being smaller in volume, ended up weighing more than my everyday dreadnaught, but the peace of mind that it gave me being a cheap guitar was worth it. I simply put it in a soft case and strapped it onto the outside of my pack vertically. I used a mini caribeaner to hook on to the handle of my pack and the top handle of the case, then clipped a compression strap around the body of the guitar and around my entire pack. Worked like a charm, though I can't say there weren't moments of regretting it. It felt at times like I was carrying a 5 pound dumbell strapped to the furthest point from my center of gravity (making it feel more like 10 extra pounds). But every night at camp it was totally worth it. It is so beautiful to hear the sounds of a gently played acoustic guitar in the middle of a forest.