I was also in wave 2, and experienced the same. Someone knocked me so hard with an elbow at some stage that I was dizzy for a couple of minutes, even still when I got out... Made me worry at some stage if I did loose conscienceless, you would probably drown cause you'd go under fairly quickly without anyone even knowing. Wave 2 is by far the biggest group being 18 to 35, they should make it 18 to 30 or something, cause the wave after us wasn't that big. As for the rest of the race, tough! Cycle was lekker though, I passed allot of guys on the uphills. The second half of the run was brutal, I walked quite a bit and still managed n 55min run. Awesome event, looking forward to the 5150 in PE.