McGowan's performance came in windy conditions at Oitavos Dunes Club.
Yet to win on tour and ranked 164th in the world, he was asked afterward where he'd like to be in four or five years.
"Obviously I'd like to be No. 1 in the world, but it is how you get there. Not all of us are as gifted as Tiger [Woods]," said McGowan, the 2006 English amateur champion.
Hoey, a former British amateur champion, eagled the 573-yard, par-5 16th.
Del Moral won the 2006 Texbond Open at Garda Golf, the former venue of the Italian Open.