"They were here [on Monday], all four of them. They were talking to me, playing pool. They were here until about 4pm. They left and went straight out to McLaren Falls," he said.
He is now spearheading a fundraising drive to bring the parents of one of the cousins over from India for his funeral. He has been liaising with his friend's family and friends and also talking with the two survivors.
"They are in shock. They aren't really talking," he said.
The man was close with one of the cousins and described him as "a good guy, a really nice guy".
"He had a beautiful soul. He didn't do alcohol or smoke. He was a funny guy. He loved to dance. He loved to travel. We went to the National Park and went skiing. [Monday], we were planning a trip to the South Island."
His friend was drowning when the cousin jumped in to try to save him. He was joined by the other two men.
"All four of them jumped. When the others jumped in, they were both drowning but when they saw them going far away and they didn't know how to swim they grabbed the bushes and climbed back up."
He said the group of friends were from northern India where there was no significant beaches or rivers. Only about 20 to 30 per cent of people from the area knew how to swim, he said.
"I think it's very important to learn to swim here. If you're staying in New Zealand, learn to swim.
"Because accidents, if something happens, there's no way to come out of the water."
Tauranga City Council parks and recreation manager Mark Smith said visitors and families often put up rope swings but the council cut these down at least a couple of times a year.
"We will probably be cutting them down more often now," he said.
Mr Smith said he did not know how long the rope had been up for, or what condition it was in.
"It's just a tragic incident."
Mr Smith said council would consider putting up signs warning people of the hazards of the lake, but would wait until the police investigation was complete before making any decisions.
About 2pm yesterday, aborists arrived and began removing low hanging limbs from trees along the river's edge.