its really easy
last weekend i was hiking in park. i walked about 12 km, dont know how many miles it is :)
but i was unable to not strip. There were no people around. it was hot and when i was in most far point of my way near the river i just take off all clothes except panties and went to the water. Water was cold and i get out very quickly. After some dry on sun i get clothed and go home.