Your plastic bottle will become black and misshapen but should not melt through, if you
are careful.
Make a tripod by propping three similarsized sticks together.
Tie the rope to the top of the bottle using a clove hitch.
Suspend the waterfilled bottle above a fire so that the flames lick the bottle
without completely engulfing it or going above the waterline. Boiling water
over hot coals minimizes the risk that your bottle will melt, although this can
still happen if the bottle gets too close to the coals. Heat until the water boils;
you do not want to overheat the bottle so that it breaks or melts. (^88) | Survive!