RedactedNarrative: V2 was traveling on West Lake Okoboji when he looked back to see what was going on behind him.  When he turned back forward water splashed into his eyes & he was blinded for a short instance. When his eyes cleared he saw V1 in front of him & attempted to shift the PWC into reverse.  V2 stated he was going approximately 15-20 mph.  V1 stated that he saw V2 coming toward his boat and thought he was going to turn but he didn't.  When V1 realized that V2 was not going to turn, V1 put the boat into reverse to try & stop the boat but V2 collided with the front left aluminum pontoon tube.  V1 was going about 5 mph.  V2 was sited for reckless use of a watercraft.  V2 was wearing a life jacket