When he's ready to build his backyard Death-Ray, or just the nuclear power supply for it, I can advise him.
First clue; develop an interest in going ocean or bay fishing. Under the boat, use my "Uncle Bob's Patented Redneck Uranium Magnet" to collect your own yellowcake. (That way, your materials acquisition will not be noticed by the Powers-That-Snoop.)
And if anyone asks what you're trying to do, just say "fishin'", with enough of an accent that the truly astute and observant individual could realize that you said, "fission".
Honesty is the best policy.
You so are rocky, Mr Bob.
Yer poeticals are believabley believable.
If I dosn’t see you between noe ans sunday, have a Mele Kalikimaka!
ta