"Well, what's your idea, Tee-hee?" the operator demanded with something of a tone of business challenge.
"Why, all we need is a radio compass," Hal replied. "You know I made one last summer, although I didn't have much use for it. We can install it on the boat and make a bee line for that fellow's island if he keeps his spark busy to guide us."
"Good!" exclaimed Bud. "That'll settle the biggest problem before us."
"Yes," Cub agreed. "You're a regular Thomas Edison, Jr., Tee-hee. I think we'll have to elect you captain of this expedition."
"If we make it," Bud conditioned with a slightly skeptical grin.
"My opinion, if it's worth anything to you guys," said Cub; "is that we'd better map out our plan thoroughly before we say anything about it to our fathers. Then we can put our arguments in convincing manner."
"We must finish our plan to-night, for we ought to start not later than Wednesday morning," Bud argued. "That'll give us one day to get ready in."
"We'll need all that," said Hal. "Now, let's get busy, boys, and see how near our plan is finished. It's after 10 o'clock, and I'll have to go pretty soon. If we go, we'll need—"
"Some food," itemized Bud.
"Yes, enough for us and to feed a starving Robinson Crusoe," amended Cub, beginning the list on a fresh sheet of paper.