Frank glanced at Joe.
"Why didn't we think of that?"
"It isn't too late yet. Let's get the boat."
"Would you and Iola care to come?" said Frank to Callie. "We're going to get our boat and follow them down the bay a bit."
"Oh, that'll be great!" exclaimed Callie. "I'd love to go. Wouldn't you, Iola?"
"I'll say!" Iola replied, slangily.
They hurried down from the dock and went along the roadway back of the boathouses until they came to the boathouse where Frank and Joe kept their craft.
In a few minutes, the Sleuth was nosing its way out into Barmet Bay, but already Chet and Biff were a considerable distance in the lead.
"We'll have to step on it," said Joe.
"We'll catch them, all right. There isn't a boat on the bay can beat the Sleuth."