Choose parallel channel . Then connect the end of wave i to the end of wave iii and make a parallel channel connecting to the end of wave ii. Only if the channel is broken on the lower side with resistance , we can conclude that wave iii is over . If the parallel channel gives support it means we have a 1-2-123... in progression . Investors should hold because even if the channel is broken on the lower side it would be a wave iv only . Regards