Russell Weekend Adventurer explains how he carries duct tape on the trail while hiking to fix little unwanted problems like tears and such. This how-to video is good whether you plan to live in the wilderness, camp overnight, or take day trips. Why put duct tape on your water bottle while hiking? Duct tape fixes a lot of things. Use about three feet of duct tape so you can pull it off and apply it to blisters or your tent.