I've seen "in lieu of..trust" many times, and agree that's the best way, but the forming of a proper trust could involve some legalities, and some folks just don't like lawyers, or bankers, for that matter. The son would probably receive more if he had gone to the trouble.
This way, he may get real chummy with the I.R.S. JMO, but I'd much prefer lawyers and bankers.
"Give me your tired, your poor, your huddled masses yearning to breathe free..."