I managed a 186 with a random team:

1: 21 2: 45 3: 41 4: 39 5: 40

Playing with my team of 3, we were able to coach a rando to follow our "plan" and regularly got on the 170-182 range by the last few hours. Mostly it involved luring the bosses in waves 3 and 4, but we couldn't beat my 186. If we had a fourth team member I think we could have gotten the gold.

Best round with my team was 182:

1: 19 (we intentionally held this back to lower the hazard level in wave 3) 2: 49 3: 40 4: 37 5: 37

I know that we could have done better in that Cohock wave 4 than we were doing, but we ran out of time to perfect it unfortunately.

Good tip. I wondered where those guys went.