LAKE DELTON, Wis. -- New debate about what goes on in gas tanks is heating up.

Talk of raising ethanol levels in gasoline is backfiring with some who believe it will ruin their livelihoods. The current Environmental Protection Agency standards max out the ethanol mix at 10 percent, but talk of raising that to 15 percent would mean big changes, especially for boaters.

Some boaters on Lake Delton on Sunday said they were concerned about the talk.

"I know you're not supposed to run it in a boat engine," said boater Byron Cook.

Gasoline with ethanol additives is acceptable in some boat engines, but concerns about engine damage make it a

"If they require you to run ethanol in one of these, you'll blow it up because it's a two stroke motor," said boater John Jackowski. "You'll blow it up. So you've got to run unleaded fuel in them."

At Lake Delton Watersports, owner Steve Zowin said his boats will accept gasoline with ethanol, but he goes out of his way to avoid it.

"It actually attracts water," said Zowin. "It'll pull it right out of the atmosphere and then you end up with excessive water in your fuel system."

The corn-produced product also reduces fuel efficiency, which Zowin said is less bang for his buck.

"Performance is an issue as well," he said.

Josh Morby, with the Wisconsin Bioindustry Alliance, said that despite some rough patches, like figuring out how to fuel fun on Wisconsin lakes, the transition to more ethanol is one that has to be made.

"Gasoline is good, but ethanol is a better solution," said Morby. "Yes there are going to be implications, but that's why it's important we work with the industry."

"I think ethanol is actually a good idea," said Jackowski. "But we're going to need unfortunately, regular unleaded gas."

Some people have expressed concern that as ethanol, and higher percentages become more prevalent, that regular unleaded gasoline will be harder to find.

Morby said there is a balance to strike. He also added that ethanol makes gas more affordable and pumps more money back into Wisconsin's economy.

The EPA has extended the deadline to comment on raising the limit to July 20.