I was in Havasu this weekend with my new used pontoon boat. At 8:30 PM I was traveling South from Speed Alley with no moon out, it was black. As the river gets narow and shallow right at the mouth I'm traveling at about 20mph when my wife yells. "Look out"!!!!!! This is what you are not going to beleive.Two boats side tied together not pointing down or up river, but sideways with swimmers in the water.Ready for the next thing you are not going to beleive.Yes that's right, no lights!!!! Only one dim stern light.So thank God I'm in the pontoon and not the Skater.Because I would have been going 40mph in the Skater. So I pull back on the throttles and turn hard left. When I slowed down I yelled to the guy "if you dont move or turn your lights on you will die sometime in the next 15 seconds"!!!!!! He then flips his front lights on.I didn't stick around to see if he moved.I do everything possible to be safe out there.I have running lights and a 5million candle watt spot light.But it just goes to show ya it's the other guy(idiot) you have to look out for.Be careful everyone and please use common sense.