Trump should present the evidence to the American people in a prime-time televised appearance from the oval office. He should demand that Congress, the FBI and others do the right thing now or face the wrath of the American people.
He should name names... he should call for resignations from people involved, he should call for prosecutions.
Bang on. This is exactly what he should do. It is the only way he can get over the inevitable spin.
If he can win eve 5% of people over it would be worth it.