Vancouver Island Lake Monster?

A news story notes several "strange stories" in regard to Cameron Lake on Vancouver Island. Most recently:

"Bridgette Horvath ... says she saw something very odd in the water when driving by the swimming area recently," ...
"Horvath said she was driving past the lake with a friend on the afternoon of July 30 when she noticed a strange wake in the water. There was no boat making the wake, which she said appeared to be made by something large under the water.
"She pulled her vehicle over and got out to look.
"In all, she said, there appeared to be three objects or creatures in the water.
"'They were going in a circle, like when whales school up fish,' she said.
"Horvath is mystified, but, says Cameron Lake resort owner Louis Verheyen, this was not the first sighting of something strange in Cameron Lake." ...
"'A couple of weeks ago someone said they saw something that looked like a row of car tires or something. Another time, a guy was fishing and he said he saw something really big on his depth sounder. It scared him and he left.'"